Hydraulic Cable Length: 1450mm/57'', Brake Lever Perch Diameter: 22mm/0.87"".. Caliper Distance Between Mount Holes(Centre Hole To Centre Hole): 63mm/2.48''.. Brake Rotor Outer Diameter: 158mm/6.22""; Inner diameter: 48mm/1.89""; Thickness: 9mm/0.35'.. Package includes:1x Hydraulic Rear Disc Brake Caliper System + 1x 158mm Disc Brake Rotor + 1Pair Brake Pad +4x Rotor Bolts +2x Caliper Mounting Bolt + 3x Ties. Fit most Chinese made ATV from 50cc to 250cc, such as : TaoTao, Buyang, Coolsport, Kazuma, Sunl, Roketa, AIM-EX etc. NOTE: PLEASE DOUBLE CHECK THE BRAKE PAD TYPE