Speed Bleeders look and fit like your stock brake bleeders. They are unique, however, since they contain a check valve that allows one-man brake bleeding. Just crack the bleeder a quarter turn off its seat, and pump the brakes.
The check valve lets fluid escape, but keeps air out. Re-tighten the bleeder after the system is bled to reseal the hydraulic cylinder.
Zinc plated with thread sealing system and protective rubber cap.