SINGLE
PAIR
Free Shipping Over $75
365-Day Guarantee
4.6 Star Reviews
Sleep Friendly
Hypoallergenic
Waterproof
DESCRIPTION
One of our most popular designs, now in larger size! Featuring a prong-set opal gem, this flat back stud is classic staple for your ear stack. It's great in a first or second piercing, but can work elsewhere, like a tragus or shen men, depending on your anatomy.
This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Note that the nature of prong settings can make them catch on hair or fibers.
Measurements:
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. diameter of gem is 4mm.
- Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
Materials: 18K PVD Gold Plated, ASTM-F136 Titanium, ASTM-F136 Titanium, synthetic opal
Care: Water and tarnish proof with proper care. If exposed to salt water, chlorine, or lotions/perfumes, rinse off with cool-warm water and gently dry. When not wearing, store in a dry, cool place. Do not pull, twist, or tug on your jewelry.
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365 DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority!
LIGHTNING FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
SINGLE
PAIR
Free Shipping Over $75
365-Day Guarantee
4.6 Star Reviews
Sleep-Friendly
Hypoallergenic
Waterproof
DESCRIPTION
One of our most popular designs, now in larger size! Featuring a prong-set opal gem, this flat back stud is classic staple for your ear stack. It's great in a first or second piercing, but can work elsewhere, like a tragus or shen men, depending on your anatomy.
This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Note that the nature of prong settings can make them catch on hair or fibers.
Measurements:
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. diameter of gem is 4mm.
- Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
Materials: 18K PVD Gold Plated, ASTM-F136 Titanium, ASTM-F136 Titanium, synthetic opal
Care: Water and tarnish proof with proper care. If exposed to salt water, chlorine, or lotions/perfumes, rinse off with cool-warm water and gently dry. When not wearing, store in a dry, cool place. Do not pull, twist, or tug on your jewelry.
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365-DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority!
LIGHTNING-FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
Trusted by over 250,000 happy customers.
SINGLE
PAIR
Sleep-Friendly
Hypoallergenic
Waterproof
DESCRIPTION
One of our most popular designs, now in larger size! Featuring a prong-set opal gem, this flat back stud is classic staple for your ear stack. It's great in a first or second piercing, but can work elsewhere, like a tragus or shen men, depending on your anatomy.
This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Note that the nature of prong settings can make them catch on hair or fibers.
Measurements:
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. diameter of gem is 4mm.
- Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
Materials: 18K PVD Gold Plated, ASTM-F136 Titanium, ASTM-F136 Titanium, synthetic opal
Care: Water and tarnish proof with proper care. If exposed to salt water, chlorine, or lotions/perfumes, rinse off with cool-warm water and gently dry. When not wearing, store in a dry, cool place. Do not pull, twist, or tug on your jewelry.
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365-DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority. Try CordsClub risk-free today!
LIGHTNING-FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreaciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
Free Shipping
Over $75
365-Day
Guarantee
Highly
Reviewed
Trusted by Over a Quarter Million Happy Ears
Tia C.
Verified Customer
Perfect for almost any piercing! I’ll use it elsewhere once I add more piercings to my ears! Love!!
Amanda H.
Verified Customer
Everyone needs this one!!!
This tiny bow is so dainty and cute! Perfect size for my stacked lobe
Alison B.
Verified Customer
Looks so cute in my forward helix! Will likely get another one for my newest forward helix, I love her!
Andrea S.
Verified Customer
I wear these almost everyday. They're cute but also lightweight so I don't feel like they're stretching my ears at all
Briana C.
Verified Customer
Sparkly!! Gorgeous little hoops!
They shine super bright, and are
super comfortable!
4 Reasons Why
You Need Cords Club Flat Backs
in your life
Reason #1:
Comfort
Sleep-proof, won’t poke you, and can be worn all day and night
Reason #2:
Happy Piercings
Made from implant-grade materials that are perfect for sensitive ears
Reason #3:
No Green Skin
Waterproof, tarnish-proof jewelry that’s been tested and designed to last
Reason #4:
You + Cords Club
Join a collaborative, stylish club and share your jewelry ideas with us!
Reason #1:
Comfort
Sleep-proof, won’t poke you, and can be worn all day and night
Reason #2:
Happy Piercings
Made from implant-grade materials that are perfect for sensitive ears
Reason #3:
No Green Skin
Waterproof, tarnish-proof jewelry that’s been tested and designed to last
Reason #4:
You + Cords Club
Join a collaborative, stylish club and share your jewelry ideas with us!
Frequently Asked Question
We’ve got answers to all your Cords Club questions, from shipping to stacking.
I'm new to flat backs. What is the most important thing for me to know?
The first thing you'll want to learn is how to keep your Flat Backs nice and secure. Just like you'd tie your running shoes to make sure they stay on your feet for a run, you'll need to adjust your Flat Backs to keep them in place, too!
But don't worry! It's an easy peasy process, and we'll help you through the learning curve. <3
Here are a few resources to get you started:
* Review the Flat Back tips and tricks info guide included with your order
* Check out this helpful playlist of how-to videos
* Connect with our customer service team for personalized help
What size are the flat back earrings?
Cords Club's Flat Backs are 18 gauge and come with a 6mm long Flat Back post.
A 6mm post is a great length for most people, so we d recommend starting there!
We do also have a range of other sizes available and sold separately. If you have questions about sizing, we'd love to help!
Are your flat backs sold individually? Or in pairs?
Our Flat Backs are sold individually, so make sure to add 2 to your cart if you'd like a pair!
Do I need to buy the flat back applicator, too?
Our Flat Back Applicator is a great tool but it's not necessary! The Flat Back Applicator is designed to help make the process of changing your flat backs faster and easier, but you can definitely change your earrings without one. The choice is totally up to you!
Our Everyday Prices
are their Black Friday Prices
Moon Flat Back Stud - Compared Across 4 Brands
CORDS CLUB
$15
Moon Flat Back - Single
COMPETITOR AVG.
$36
Moon Flat Back - Single
Single Stud
Pair of Studs
Material
Hypoallergenic
Nickel-Free
Warranty
CORDS CLUB
$15
our price
$30
$27
$30
our price
ASTM F136 Titanium
ASTM F136
Titanium
365-day
BRAND A
$30
2.0x more
$60
2.0x more
ASTM F136 Titanium
ASTM F136
Titanium
none
Final Sale - no recourse
BRAND B
$38
2.5x more
$76
2.5x more
ASTM F136 Titanium
ASTM F136
Titanium
30-day
$10 fee
BRAND C
$40
2.7x more
$80
2.7x more
ASTM F136 Titanium
ASTM F136
Titanium
365-day
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Apply Your Flat Back Studs In Seconds
New to flat backs? Watch our videos to see how simple they are to apply.
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SHOP BEST SELLERS
Highly Recommended for Sensitive Ears
- Joan J.Verified Buyer4 days agoRated 3 out of 5 starsCute but…
I don’t know about anyone else, but my shoulder length hair is constantly getting caught in the prongs of these earrings. Aside from that, these studs are the perfect size and have a nice iridescence to the light, showing off different colors.
CCCords Club21 seconds agoHi Joan ✨,
Thank you for the honest feedback! We're so glad you love the perfect size and beautiful iridescence of the 4mm opal—those color shifts really are magical. We totally understand the hair-catching concern with shoulder-length hair, and we appreciate you sharing that experience as it helps other customers too! 💌
—Jace with Cords Club 🌸✨ - Jennie B.Verified Buyer4 weeks agoRated 5 out of 5 starsPretty
Love how these look and are so comfortable
CCCords Club3 weeks agoHi Jennie!
The Opal 4mm Flat Back Stud proves that pretty and comfortable make the perfect pair. ✨ We're so glad 😀 these beauties look amazing and feel just as good — sounds like you've found your new go-to studs! Thank you for sharing your love and for the glowing 5‑star rating!
😘~ Elvie with Cords Club
- Amanda6 months agoRated 5 out of 5 stars5 Stars
I got these 4mm opal studs for my main lobe piercing to fill out a trio of opal earrings in a triangle configuration. They are a good size for the main lobe, especially when paired with the Tortuga opal stud and the micro opal stud. The prongs add a little gold at the front and they are plenty sparkly and iridescent for a small opal earring.
CCCords Club6 months agoHi Amanda!
We’re grateful for your 5-star note — so glad the 4mm Opal Studs are sparkling and completing your triangle stack. –Hope with Cords Club
- Sarahanne M.Verified Buyer6 months agoRated 5 out of 5 starsLove the Larger Size
I bought these in 3mm and mentioned in a previous review that I'd love to have them in a larger size and they DID it!! Super cute, looks almost like a pearl from far away. They are my every day earrings.
CCCords Club6 months agoHi Sarahanne!
We love a wish come true ✨ So glad the larger size delivered that dreamy pearl vibe — and earned a spot in your everyday lineup!
🤍 Jace with Cords Club - Lucy W.Verified Buyer8 months agoRated 5 out of 5 starsMy go too!!
I have these and the diamonds and get compliments on both!! I love having these as a go to put in and forget but still a little bling!!
CCCords Club8 months agoHi Lucy! Love that they’ve become your go-to staples—bling you can forget you’re wearing is the best kind ✨ Thanks for sharing the love! 🌻 Jace with Cords Club
Top-Tier Customer Service
Have questions? Our amazing in-house customer service team is ready to answer them!
10,000+ Verified 5-Star Reviews
Loved by thousands of happy ears (and counting).
Fast & Secure Shipping
Get your orders ASAP. Our in-house shipping team packs all orders within 1-2 business days!
365-Day Warranty
We stand by every Cords Club product’s durability & quality. Try risk free, today!
Love Flat Backs?
Two Studs for the Price of One. Every Month.
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have a question?
Check out our FAQ page for answers to our most frequently asked questions and to contact us!