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Bioplast Thread Converter
Qty
Sold as a SINGLE
$ USD
Want to match your favorite threaded end to a bioplast labret? No problem! Just pick up one of these thread converters!

This will go into your bioplast labret (or whatever piece you have) and will allow you to wear generic threaded ends on it! So you're not stuck with having to buy only bioplast compatible ends with this piece. Be careful, it's SMALL and can get dropped/lost easily.
In our drop-down menus for adding to cart, we show the gauge of the item you are ordering, then the length/diameter, then the ball size if it has any:

Jewelry is measured through a gauge system (conversion chart below). The higher the gauge number the smaller the wire is. For reference, a standard "earring" is usually 20 gauge. Jewelry gauges can vary between manufacturers. There is no universal regulation on companies to make a standard size in body jewelry. This is because some jewelry is made outside of the USA and measured in millimeters. And in the USA jewelry is measured in inches.

GAUGE CONVERSION CHART:
Gauge Millimeter Inch
20g .81mm
18g 1mm
16g 1.2mm 3/64"
14g 1.6mm 1/16"
12g 2mm 5/64"
10g 2.4mm 3/32"
9g 2.7mm
8g 3.2mm 1/8"
7g 3.5mm
6g 4mm 5/32"
4g 5mm 3/16"
5g 4.5mm
2g 6mm 1/4"
1g 7mm
0g 8mm 5/16"
00g 9mm to 10mm 3/8"
  11mm 7/16"
  13mm 1/2"
  14mm 9/16"
  16mm 5/8"
  19mm 3/4"
  22mm 7/8"
  25mm 1"
Show sizes above 1 inch

Rings

Rings are an essential item that can be worn in many piercings. They come in various styles:
  • Captive bead rings - These use tension to hold a bead in place.
  • Clickers - These use a hinge to open and close the ring.
  • Segment rings - These have a "segment" that comes completely out of the jewelry similar to removing a bead. But it looks like a completely seamless piece of jewelry.
  • Seamless rings - These rings require bending to open & close.
How to measure rings
  • Gauge - This is the thickness of the ring itself.
  • Diameter/Length - Measure directly across the inside center of the ring.

Straight Barbells

Straight barbells are commonly worn in various ear projects, nipples, and tongue piercings.
How to measure straight barbells
  • Gauge - This is the thickness of the post/bar itself.
  • Length - Measure directly across the post between the ends.

Double Flare Plugs / Eyelets / Gauges

Commonly worn in earlobes, but can be worn in other stretched piercings.
How to measure double flare plugs
  • Gauge - Measure the size of the plug across the middle.
  • Wearable area - Measure straight across the side of the plug between where the flares start.
  • Flare size / rise - Measure the distance from the side of the plug to where the flare ends.

Single Flare Plugs / Eyelets / Gauges

Commonly worn in earlobes, but can be worn in other stretched piercings.
How to measure single flare plugs
  • Gauge - Measure the size of the plug across the middle.
  • Wearable area - Measure straight across the side of the plug between where one flare starts and where the o-ring starts.
  • Flare size / rise - Measure the distance from the side of the plug to where the flare ends. (see image of double flare plugs)

No Flare Plugs / Eyelets / Gauges

Commonly worn in earlobes, but can be worn in other stretched piercings.
How to measure no flare plugs
  • Gauge - Measure the size of the plug across the middle.
  • Wearable area - Measure straight across the side of the plug between the o-rings.

Teardrop Shaped Plugs

Worn in earlobes
How to measure teardrop shaped jewelry
  • Gauge - Add the height + width and then divide by 2. Then use the conversion chart to get the closest gauge.
  • Wearable area - Measure directly across the plug between where the flares begin.
  • Flare size / rise - Measure from between the flares to the edge of where the flares end.

Curved Barbells

Curved barbells are commonly worn in various ear projects & eyebrows.
How to measure curved barbells
  • Gauge - This is the thickness of the post/bar itself.
  • Length - Measure directly across the post between the ends.

Circular Barbells

Circular barbells are commonly worn in various ear projects, septums, nipples, and lips.
How to measure circular barbells
  • Gauge - This is the thickness of the post itself.
  • Diameter/Length - Measure directly across the inside center of the circular.
JEWELRY THREADING TYPES

Externally threaded

Internally threaded

Threadless
SIZE COMPARISON GUIDES
Enlarged example of 1" on ruler
Ruler example
Customer Photos
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Customer Reviews (35)
5 Posted on 5/18/2018    by Molly
Verified purchase 14g  
From the description and the other reviews, I expected this to be small, but I really wasn't expecting it to be THAT small. I almost didn't see it in my bag. It's a little tricky to remove, since it's so small and it fits very snugly, but it does it's job and I'm very happy with it.
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5 Posted on 1/3/2018    by Kyle
Verified purchase 14g  
This is fantastic! I have a cartilage piercing in my helix that is very... grouchy. I can only really keep bioplast labrets in it, so having this thread converter allows me to use the old balls that I have to give a different look now and then.
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0 Posted on 1/2/2015    by Rachel
Verified purchase 14g  
This is my second time buying one of these. They're great for making a quick change from retainer to stud. The only thing I've noticed is that they're VERY easy to lose.
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0 Posted on 6/11/2014    by Beija
Verified purchase 14g  
Fits really tightly on my labrets. A little tough to thread beads onto them, especially all the way. These are unbelievably tiny, too. Just be careful with them and they'll make your piercing look great.
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0 Posted on 2/4/2014    by Rachel
Verified purchase 14g  
I got two of these to use with my bioplast labret retainers, and I have to say I love them. It's the most genius little thing, I can't believe I didn't think of this! All I had to do was pop the threaded converter into the labret post, screw on my extra balls, and viola! The only tip I have, is that if you're prone to losing small items, leave these screwed into the balls you're using with with it.
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