Revolutionary rugged polystyrene plastic device is used to lockout cylinder tanks, including propane tanks on fork trucks and standalone propane tanks. Special design allows device to be used in tight spaces. Valve stem hole is 1.25" in diameter. Equipping your employees with the proper lockout tools and warning devices can save lives, reduce lost employee time, and cut insurance costs. Brady® is a world leader in lockout/tagout products and services offering industry expertise and a broad range of durable, easy-to-use lockout devices.