Brake system bleeding made simple. By installing this bleeder screw with special holding valve, you simply open the screw of the return-valve a half turn and pump the brake fluid through the brake system. The special holding valve prevents air getting sucked back into the system. The result: you don't need to have a second person to pump or open and close the bleeder screw. Changing the brake fluid or bleeding the system is done in seconds. Comes with anodized mud cap. 770.13.920.000 for rear brake caliper SM 07-09, SMC 08-10, Duke 08-10 plus front and rear brake caliper Enduro 08-12. 770.13.920.100 for front brake caliper SM 07-09, SMC 08-10 and Duke 08-10.