Mountain Bike Hydraulic Disc Brakes Kit Specifications: F160-R140, F180-R160 Weight: 2LBS/Pair, brake hose length:800mm for Front Wheel and 1400mm for Real Braking Direction: left--front and right--rear Hydraulic Disc (Pros ): 1.More stopping power/more efficient ,and better modulation of the brake force. 2.Smoother operation ,because there is less friction in the system and easily on hand because it require less force to push the lever. 3. More technologically advanced/high end Package Details: 1* Front brakes (Left 800mm hose) 1* Rear brakes (Right 1450mm hose) 1* IS Mount bracket for R160mm/F180mm 4* Bolts 2* 160mm Disc Brake Rotor(TIPS:this set does not include the 2*adapter) 12 * Bolts for installation. 1* Instructions