Rear Disc Foot Brake Assemby Master Cylinder Caliper Oiler for 110cc 125cc 150cc 200cc 250cc ATV Quad Rear Disc Foot Brake Assemby Master Cylinder Caliper Oiler The length of oil tube: 650mm (25.59") the bolt holes on the master cylinder: 45mm (1.77") the bolt holes on the caliper bolt holes: 50mm (1.97")