Brady gate valve lockouts are made of rugged injection-molded polypropylene and are available in red, blue, green and yellow. The clear gate valve lockouts are made of styrene acrylonitrile. The unique knockout center fits OS&Y or "rising stem" valves and accepts shackles up to 3/8" in diameter. They are supplied with English, Spanish and French danger labels. Service temperatures from - 25° F to 200 ° F.