These beautifully crafted highly polished triple sphere rear plugs are surgical quality steel.

Constructed from 3 spheres in two optional sizes:

Small: 20mm ,25mm, 30mm in diameter. 

Large: 30mm, 35mm, 40mm in diameter.

Compatible with any Fancy Steel chastity belt with rear cable design. Each plug has an integrated splitter ring that attaches to the rear cable of the belt.  The plug can be attached without removing the chastity belt.