The Promax F1 DSK-927 is a proven, flat mount, dual piston hydraulic disc brake caliper that has the ideal combination of durability and performance making it perfect for commuting, touring and road bikes.Lightweight aluminum alloy caliper. Heat insulating piston design for added reliability. Includes sintered disc brake pads. Compatible with common B-Series pads. mineral oil. Item Specifications: Brake Caliper Type, Flat Mount, Brake Lever Actuation, Hydraulic, Brake Position, Front or Rear, Defined Color, Black, Hydraulic Fluid Type, Mineral Oil, Pad Compound, Sintered, Rotor Included, No, Weight, 131,.