Bleeding the brakes or changing the brake fluid is completed in a matter of seconds, even on your own: First replace the original bleeder screw on the brake caliper with this new bleeder screw equipped with a check valve. When changing the brake fluid or bleeding the system, simply release the screw on the check valve by a half turn and pump the brake fluid through the system with the brake lever. The valve prevents air from forcing its way back into the system on releasing the brake lever. Supplied with an anodized dust cap.
Allows bleeding brakes in just seconds.
Prevents air from forcing its way back into the system on releasing the brake lever.
These appear to have two locations for wrenches, presumably to hold one while the other opens or closes the valve. Is this why they are so much more expensive than standard speed bleeders which operate with a single wrench?