Shimano Ultegra BR-R8070 Front Flat-Mount Disc Brake Caliper with Resin Pads with Fins and Adaptor for 140/160mm RotorThe Shimano Ultegra BR R8070 is a hydraulic disc brake caliper. As part of the Ultegra R8000 series, this brake is "pro proven", offering advanced control in all conditions, and is customizable for your racing style. Flat mount Resin pads Product Specifics Pad Compound: Resin Defined Color: Black Weight: 140 Rotor Size (mm): 140 Rotor Size (mm): 160 Brake Lever Actuation: Hydraulic Brake Caliper Type: Flat Mount Rotor Included: No Hydraulic Fluid