SINGLE
PAIR
Free Shipping Over $75
365-Day Guarantee
4.6 Star Reviews
Sleep Friendly
Hypoallergenic
Waterproof
DESCRIPTION
The classic mystery key, but make it jewelry. This flat back stud is a nod to that one random key in your junk drawer—you don’t know what it opens, but it’s way too cute to toss.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of key is 2.6x6mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
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
The classic mystery key, but make it jewelry. This flat back stud is a nod to that one random key in your junk drawer—you don’t know what it opens, but it’s way too cute to toss.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of key is 2.6x6mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
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
The classic mystery key, but make it jewelry. This flat back stud is a nod to that one random key in your junk drawer—you don’t know what it opens, but it’s way too cute to toss.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of key is 2.6x6mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
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
- Stephanie B.Verified Buyer3 months agoRated 5 out of 5 starsPerfect just want I wanted
Get so many compliments! Love them!
CCCords Club2 months agoHi Stephanie!
We're so happy to hear you're loving the House Key studs and getting so many compliments! There's nothing better than finding that perfect piece that makes you feel amazing. Thank you for sharing your love! ✨
🍀 Jace with Cords Club - Miss M. F.Verified Buyer3 months agoRated 5 out of 5 starsCool!
Love this one, too!
CCCords Club3 months agoHi Miss!
I'm so happy to hear you're loving your House Key Flat Back Stud too! 💕 There's something so fun and unique about the House Key design — it's such a perfect little statement piece that adds just the right touch of personality to your ear styling! 🗝️ It sounds like you're building such a great collection of pieces that you absolutely love, and I'm so glad this little key is another perfect addition! ✨
😘~ Elvie with Cords Club
- NatashaVerified Buyer4 months agoRated 5 out of 5 starsUnique!
I've seen a few key designs but theyre always fancy keys. I love how different these are, never seen anyone else with this style! I spaced out while doing my most recent stack and meant to put these in my tragus. They are very dainty and would fit on my tiny space perfectly!
CCCords Club4 months agoHi Natasha!
We're so happy you love how unique the House Key Flat Back Studs are! 🔑✨ You're absolutely right—most key designs are super ornate, so we wanted to create something different and more everyday-wearable! It makes us so excited to hear you haven't seen this style anywhere else 💖 And yes, they would be absolutely perfect for a tragus placement with their dainty size! We love that you're thinking about incorporating them into your stack—they're going to look amazing! 🌸
😘~ Elvie with Cords Club
- Vanessa H.Verified Buyer4 months agoRated 5 out of 5 starsLove this collection so much
The junk drawer collection is so darn cute! This one paired nicely with the heart locket, though I can’t remember if that’s also from the junk drawer collection.
CCCords Club4 months agoHi Vanessa! We’re so happy you’re loving the Junk Drawer Collection—it really is such a fun mix of pieces! ✨ Pairing it with the heart locket sounds adorable 💖 (and yes, that one’s part of the collection too!). Thank you for sharing your styling inspo with us 🌸
✨ Jace with Cords Club - Emma B.Verified Buyer6 months agoRated 5 out of 5 starsSo detailed
This one is so detailed for how small it is
CCCords Club6 months agoHi there ✨
We’re so glad you love the intricate detail—even in such a small piece 💛. It’s wonderful to know the craftsmanship shines through and makes it extra special in your collection. Thank you for sharing your experience with us!
🌻 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!