Introducing Speed Bleeder, the clever patented screw valve that makes brake bleeding an easy one-person job. Simply replace your old bleeder screw valves with a set of Speed Bleeders. When you bleed your brakes, simply back off the bleed screw valve about 1/2 turn and pump the pedal. When done, re-tighten the valve. The job is done! Sold in pairs. Note: some calipers have 1 valve, some have 2.; check your car before ordering.