Black Obsidian Natural Volcanic Glass Slave Knocker Barbell

Gauge Size: Standard 14G (1.6mm) used for belly, floating belly, VCH, and Christina piercings. 

Ring Measurements: Size 14G (1.6mm) 3/8" (10mm) Captive-Bead-Ring with a 6mm natural volcanic glass bead.

Bar Length: Choose between 5/16" (8mm), 3/8" (10mm) or 1/2" (12mm). The standard / most common length used for floating belly, navel, VCH and Christina piercings is 3/8" (10mm).

If you are not sure what length you need for your piercing, please refer to the 'How to Measure a Curved Barbell' photo in this listing, or click here to see our "Piercing Size Guide".

Materials: Hypoallergenic 100% 316L surgical steel externally threaded curved barbell, 5mm ball top and captive-bead-ring with a genuine, natural black obsidian CBR bead. This piece is 100% waterproof, tarnish-free, and a great choice for everyday wear!

If you would like to learn more about the healing properties of black obsidian, please click here.

Each knocker barbell is sold individually.

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For both hygienic reasons and also due to the custom nature of our items, our store does NOT accept any returns or exchanges. Please make sure that you know you correct piercing size *before* placing an order with us, or you are more than welcome to reach out to us directly via email for advice or further guidance as well!

We put together every item in our store carefully and thoughtfully by hand, and we always make sure to test each piece of jewelry for perfect compatibility and smooth threading prior to shipment. Therefore, we do not offer any replacement balls, natural stone beads or other jewelry parts for sale by themselves, only as a proper matched set.

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Please sanitize your barbell using only warm water and antibacterial soap prior to inserting it into your piercing. You should also periodically take out your piercing jewelry and gently scrub the threading with warm water and antibacterial soap to prevent any build up and to keep your piercing free from contaminants, etc.

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Always be very gentle with your barbell when you are twisting on the ball endings, so that you do not accidentally strip the threading by over-tightening them.

If you continue twisting the balls past the point where they reach a soft, natural stopping place at the end of their threading, you will likely strip the threading and damage your jewelry.

With that being said, all kinds of body jewelry with threading do naturally loosen with daily wear and body movement. In order to prevent the top balls from becoming lost, you should regularly and *very gently* tighten them as needed.

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