3mL Vial Shim Adapters

$1.99

Taxes calculated at checkout.

Shim Quantity
Color

Make any 10mL slot fit a 3mL vial. These drop-in shims convert larger case slots for a snug, rattle-free fit — extending one case across your whole collection.

Product Features:

  • Added Versatility — Allows 3mL vials to fit securely into 5mL or 10mL slots.
  • Durable Build — Made from high-quality 3D printed material built to last.
  • Easy to Use — Insert into the slot and drop in your vial for an instant snug fit.
  • Fridge & Freezer Safe — Durable material built to handle cold storage.
  • Multi-Purpose — Ideal for peptides, insulin, TRT, and more.

Fitment Specs:

  • Fits 3mL vials up to 17mm in diameter and 45mm tall.
  • Shims fit into slots meant to hold 5mL/10mL vials that are 23mm in diameter and 55mm tall.
  • 5 stars: 36 (90%)
  • 4 stars: 2 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (3%)
  • 1 star: 1 (3%)
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Etsy customer

These were perfect. Love the mint color.

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Etsy customer

Perfect item to convert vial slots that hold only one specific size. Well made and quick shipment. Thank you!!

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Etsy customer

Just cheap and simple adapters. perfect fitment.

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Etsy customer

Great quality - great idea to have these so the case can be used for 2 size vials. Thanks

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Etsy customer

Great shims. Got the green-purple. Looks super cool. Will be ordering more in the future.

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Etsy customer

They fit perfectly in storage tower

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Michael

just what I expected and wanted, thank you

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Ellen

nice, I think they will come in handy

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Etsy customer

Exactly as advertised and arrived quickly!

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Etsy customer

Great shims for local clients, wouldn't work for shipping as it would need a cap.

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Etsy customer

I keep getting different colors to make picking stuff out visually easier.. These are sturdy and look great no matter what color you choose!

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Etsy customer

Great fit just what it's intended for.

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Etsy customer

Great fit just what it's intended for.

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Etsy customer

Very solid and well-made shims

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Etsy customer

Well-made product and great customer service!

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Etsy customer

Item was as described, good quality.

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Etsy customer

makes my vial case more versatile

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Etsy customer

Fit in my peptide case, makes some of the extra 10 ml slots more useful to me

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Etsy customer

Nice little vial holders. Haven’t been able to try them yet, but should work!

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Etsy customer

Fit was good. As described. Will buy more in the future if needed.

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Etsy customer

3mL Vial Shim Adapters

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Etsy customer

love the colors. shipping was fast

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Etsy customer

item worked well.. nicely made

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Etsy customer

Just like the other pack I got, colors look great and fit nicely in the tray I also purchased.

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Etsy customer

Quality inserts to go with the tray I ordered. Color coding helps a lot.

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Etsy customer

Very satisfied with this purchase. It helps make my peptide cases very versatile.

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Etsy customer

Works well to store smaller peps with my bigger peps

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Etsy customer

Product was nicer than pictured

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Etsy customer

Product was better than pictures.

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Etsy customer

Item is made of good quality

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Etsy customer

Great! Product is as expected.