SRAM Rival 22 Brake Calipers Features: Designed to work with rims up to 29mm wide and tires up to 28mm wide Brake pad compound provides superior performance in wet conditions Radiussed brake shoe washers allow easy adjustment of toe-in and rim contact angle Indexed quick release Caliper pivot bolts and cable hardware are stainless steel Specs: Brake Mount TypeShort Reach Caliper (39mm - 49mm) Brake PositionRear Brake Lever ActuationShort Pull Defined ColorBlack Pad TypeCartridge