The Promax F1 / DSK-927 Disc Brake and Lever Set is a proven, reliable, flat mount hydraulic brake that's ideal for commuting, touring and road bikes - Lightweight aluminum alloy caliper and lever - Dual-piston caliper design - Lever reach adjustment to fit different sized hands - Heat insulating piston design for added reliability - Mineral oil - Includes sintered disc brake pads -Compatible with Shimano B-Series pads - Pre-Bled - 925mm hose