"I love these new studs, my ears aren't irritated at all! Super cute and so comfortable"
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Key To My Heart Flat Back Stud

$24.00
4.9
Rated 4.9 out of 5 stars
38 Reviews
Sleep-Friendly
Hypoallergenic
Waterproof
Color: Gold
Option
DESCRIPTION

The smallest key on the planet, this old-fashioned skeleton key is ready to unlock your heart (via your ear, of course).

A Cords Club exclusive, we designed this flat back stud from scratch. We spent months perfecting the size, weight, and color of this gorgeous stud!

This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud.

Measurements: 

  • 18 GA (1mm)
  • Post is 1/4 inch (6mm) in length, with a 4mm disc on back. 
  • Approx. size of front piece is 8x3mm
  • 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 Titanium, Titanium, zirconia

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 warm water with a few drops of dish soap for about 15 minutes. Gently clean with a soft cloth and store safely.

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 in-house shipping team carefully packs and ships orders within 4 business days. During peak launches, please allow extra time.

Free Shipping Over $75

Free Shipping
Over $75

365-Day Guarantee

365-Day
Guarantee

Highly Reviewed

Highly
Reviewed

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:

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?

Both! Grab a single if you’re mixing and matching, or a pair to save 10%

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!

Trusted by Over a Quarter Million Happy Ears

A close-up of an ear with multiple silver piercings, including heart, bow, and gem-shaped earrings.

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!

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

Feature
Single Stud
Pair of Studs
Material
HypoallergenicNickel-Free
Warranty
CORDS CLUB
$15our price
$30$27 our price
ASTM F136 Titanium
Yes
365-day
BRAND A
$302.0x more
$60 2.0x more
ASTM F136 Titanium
Yes
noneFinal Sale - no recourse
BRAND B
$382.5x more
$76 2.5x more
ASTM F136 Titanium
Yes
30-day$10 fee
BRAND C
$402.7x more
$80 2.7x more
ASTM F136 Titanium
Yes
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.

Highly Recommended for Sensitive Ears

4.9
Rated 4.9 out of 5 stars
Based on 38 reviews
100%would recommend this product
Slide 1 selected
38 reviews
  • Lisa P.
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    One of my faves

    I love anything miniature and these feel like little vintage trinkets. They pair so well with the hear lock studs.

    CC Profile picture for Cords Club
    Cords Club
    22 seconds ago

    Hi Lisa!
    Love how you described them 🌸 Miniature pieces really do feel like little treasures, and pairing them with the heart lock studs sounds like such a charming combo 💌✨
    —🌿 Jace with Cords Club

  • Courtney
    2 weeks ago
    Rated 5 out of 5 stars
    5 Stars

    so delicate! love them

    CC Profile picture for Cords Club
    Cords Club
    2 weeks ago

    Hi Courtney! 🗝️🧡✨

    Thank you so much for your lovely review of the Key To My Heart Flat Back Stud. ⭐ We’re delighted you find it so delicate and that you love it — pieces like this are made for everyday comfort and style. 🌙

    –Hope with Cords Club

  • Emily S.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Cute paired with the Heart Lock Stud

    Paired with the Heart Lock Flat Back Stud - they are so precious and fun together! Note that the 6mm flat back post that comes with them was too short to fit all the way through my 7yo’s lobe, however.

    CC Profile picture for Cords Club
    Cords Club
    1 month ago

    Hi Emily!
    That's so sweet that the Key To My Heart and Heart Lock studs are such a perfect pairing together 💎🌸! We love hearing that they're precious and fun — that combo sounds adorable. Thanks so much for letting us know about the fit with the post length, we really appreciate you sharing that detail!
    —🌼 Jace with Cords Club

  • Ashley F.
    Verified Buyer
    1 month ago
    Rated 5 out of 5 stars
    Too cute

    Love this tiny keys

    CC Profile picture for Cords Club
    Cords Club
    1 month ago

    Hi Ashley!
    Absolutely adorable ✨🔑! Those tiny keys make such a charming detail, and it’s wonderful to hear they’ve captured your heart 💖🌸.
    —🌺🌱 Jace with Cords Club

  • Resi K.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    Detailed

    Tony and cute. Goes well with lock charm

    CC Profile picture for Cords Club
    Cords Club
    2 months ago

    Hi Resi! 🗝️✨
    Yes, the lock and key combo is absolutely perfect together — there's something so sweet and symbolic about that pairing! We love how the tiny details really make these pieces special, and it sounds like you've created the cutest coordinated look 💖🔒.
    —🌿☀️ Jace with Cords Club

Top-Tier Customer Service

Top-Tier Customer Service

Have questions? Our amazing in-house customer service team is ready to answer them!

10,000+ Verified 5-Star Reviews

10,000+ Verified 5-Star Reviews

Loved by thousands of happy ears (and counting).

Fast & Secure Shipping

Fast & Secure Shipping

Get your orders ASAP. Our in-house shipping team packs all orders within 1-2 business days! 

365-Day Warranty

365-Day Warranty

We stand by every Cords Club product’s durability & quality. Try risk free, today!

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