Length of the brake line:550mm/21.65″;Brake Caliper Mounting Hole Central Spacing:63mm/2.5″ Rear brake assembly for 50-125cc Chinese ATV Quad,not easy to rust Replacemnet for Taotao Boulder B1,Coolster 3050HD 110cc ATV,110cc Peace Motorsports ATV,and many other model Using high quality iron and plastic processing,wear resistance,corrosion resistance,has long service life Warranty:We are always available to help our customers.Please message us for replacement or refund if you are not satisfied with the order Reature: Item Type: Brake Caliper Material: Iron+Plastic Color: Black+Silver Brake Tubing Length:Appro 550mm/21.65″ Brake Caliper Mounting Hole Central Spacing:63mm/2.5″ Replacement for: 50cc-125cc ATV Almost all of the ATV brands from China Taotao Boulder B1,Coolster 3050HD 110cc ATV,110cc Peace Motorsports ATV Package Included:Rear Brake Master Cylinder x 1pc,Keychain x 1pc