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Sport Fucker Boner Expansion Kit - Black
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.
Features:;Super stretchable yet firm TPR;Stackable and compatible with the Boner Kit;Material: Super stretchable yet firm TPR;Dimensions;Ball Ring Exterior: 1.3 by 1.3 in.
Ball Ring Interior: .9 by .9 in.