You gain two more square donuts with this expansion pack. Try buying a different color to create your own custom look. One expansion pack plus the original Boner Kit will give you four square donuts total.
Super stretchable yet firm TPR
Stackable and compatible with the Boner Kit
PRODUCT DIMENSIONS
Ball Ring Exterior: 1.3 by 1.3 in.
Ball Ring Interior: .9 by .9 in.
You gain two more square donuts with this expansion pack. Try buying a different color to create your own custom look. One expansion pack plus the original Boner Kit will give you four square donuts total.