Harley Davidson Hydraulic Brake Master Cylinder 11/16in Bore Performance Machine Contour Billet Handlebar Control Black 0062-2910-B Performance Machine 11/16in. Bore Hydraulic Brake Contour Billet Handlebar Control (Dual Caliper) – Black 0062-2910-B Made in the U.S.A. Hydraulic brake master cylinder comes in 9/16in. or 11/16in. bore size; Harley Davidson Hydraulic Brake Master Cylinder 11/16in Bore Performance Machine Contour Billet Handlebar Control Black 0062-2910-B This Item will fit most Harley Davidsons. CNC-machined in billet aluminum and available in black Hydraulic brake master cylinder comes in 9/16in. or 11/16in. bore size; Made in the U.S.A.