These Surgical Steel Curved Barbells are all Internally Threaded for a precision fit, and all 316LVM Stainless Surgical Steel. These are NOT the cheaper commercial grade of 316L Surgical Steel that you are usually offered in Body Jewelry by many other company's.

Curved barbells are designed for clients who frequently remove or change their jewelry. Although these barbells can be worn with virtually any piercing, they are the perfect option for navel, eyebrow, and several below the waist piercings. Bar measurements are taken from between both balls.

These are all Internally Threaded except for 18 gauge.
Custom Ball Sizes can be found here; http://www.thechaingang.com/product_info/1249/ballin-curved-barbell