BIFRIVET Bifurcated Rivets – 100-pce 5/10/11/12mm Xcel – Bifurcated Rivets or Split Rivets are designed to pierce soft materials such as leather, thin metal, wood, etc. The split prongs ensure the rivet is set in place by rolling back into the material. Nickel plated, assorted sizes 5mm (3/16 ), 9.5mm (6/16 ), 11mm (7/16 ), 12mm (1/2 ). Prepack 100.