14g - 12g Internally Threaded 4mm Magnetic Jewel Top for Magnetic Base - Price Per 1

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As low as $4.99
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SKU derm063
Weight 0.0011
Brand Painful Pleasures
Material Magnet

4mm Magnet Gems for Our 4mm Magnetic Dermal Bases

Change up your look with the flick of your fingernail by pairing these magnet gems with our 4mm magnetic dermal bases! How can changing your internally-threaded jewelry ends be that easy? All you have to do is replace your existing dermal top or the balls on your straight barbell, labret stud, circular barbell, or other threaded jewelry with our magnetic dermal bases. Once you have the bases in place, changing your look becomes as simple as popping out one of these 4mm magnet gems and popping in a different one in a new color!

The magnets on our gem tops and magnetic dermal bases are very strong, so you'll never have to worry about the gems falling out. If you can't flick out the gem with your fingernail, simply pluck it out with tweezers, as shown in the video tutorial below. Please note that these magnetic gem tops cannot be autoclaved.


  • Gem Top Diameter: 4mm (5/32")
  • Quantity: Price Per 1 Magnetic Gem Top
  • Gems Available in Multiple Colors
  • Magnetic Dermal Bases Sold Separately
  • Gem Tops Cannot Be Autoclaved

Related Products:

4mm Magnetic Dermal Bases
5mm Magnetic Dermal Bases
5mm Magnetic Gems
Dermal Anchors
Labret Studs

Tutorial Video on Using Our Magnetic Gem & Magnetic Dermal Base Sets:

Size Table

Standard Body Jewelry Measurements

The following webchart is a quick reference guide for standard body jewelry measurements and how to measure basic body jewelry. Please print this webchart to help measure your body jewelry accurately.

Size Reference Chart

Visit our PainfulPleasures Infocenter for additional body jewelry information. There, you will find detailed articles on standard body jewelry sizes, how to measure body jewelry, basic body jewelry, and more.

Standard Body Jewelry Threading

Ensure compatibility between standard (non-custom) PainfulPleasures body jewelry parts using the tables below. More information on threading, including custom thread patterns, can be found in our Threading Infocenter article.

Internally threaded jewelry has a threaded post on the top and/or end, which is then inserted into a threaded hole in the barbell shaft.

Internal Thread Patterns by Gauge


18g, 16g

14g, 12g


Internal Thread Pattern

0.8mm or 0.9mm



Externally threaded jewelry has a threaded post on the barbell shaft, which is then inserted into a threaded hole in the top and/or end.

External Thread Patterns by Gauge


18g, 16g

14g, 12g, 10g

External Thread Pattern



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