Features:- Use: Mtb / trek / e-bike- Front + rear mechanical disc brake calipers - 1 pair- Dual piston operation ensure even braking and pads wear- Better brake performance and brake rotor setting- Cable stop and outer piston adjustement without tools- Universal installation front/ rear, mount with adapter- With polymer steel brake pads FORCE Art. 42350- Steel base polymer brake pads fixed with screw- Compatible spare pads FORCE art. 42350- Set packed without adapters and rotors.Specifications:- Material: Alloy caliper, steel arm, plastic cover- Weight of 1 pair with screws and pads: 424 g