Pro-Tek RCK-210B Blue Front & Rear Brake & Clutch Fluid Master Cylinder Reservoir Caps Front & Rear Brake Fluid Master Cylinder Reservoir Caps and Clutch Fluid Master Cylinder Cap Set in matching blue anodized finish These identical round threaded front and rear brake caps (Pro-tek Part No. RC-100) are both 2.25" x .50" and have the word Pro-tek engraved on it twice This round threaded clutch cap (Pro-tek Part No. RC-300) is 1.50" x .50" and has the word Pro-tek engraved on it twice 100% CNC made from 6061 T6 billet aluminum Replaces only the stock plastic caps.