Shimano BR-UR300 Hydraulic Disc Brake Assembly Adaptor Rear BlackThe Shimano BR-UR300 Hydraulic Disc Brake Assembly has everything you need including a brake caliper, lever, and hose. These pads resist contamination effects. The lever is the right size for 3 fingers making it very comfortable. The caliper is lightweight and braking power is optimized in various conditions with the proper position. Includes resin pads without fins. Version with adaptor. Available in front and rear.689228880672