Precision Engineered - Gate valve lock engineered to secure 18-inch to 24-inch diameter valve handles with up to 5 inch diameter stems, prevents unintentional valve opening Extremely Versatile - Valve lockout with removable center knockout to lock out OS&Y or rising stem gate valve and overlapping hinge and lock to ensure a solid lock out, works with gas valves, forklift gas valves, propane valves, and other industrial valves Industrial Grade - Rising stem valve device made of rugged ABS plastic body, withstands temperatures from -51 to 300 degrees Fahrenheit, built to endure adverse industrial environments Premium Valve Lock - (1) gate valve LOTO device, 4 lockout locks holes, detachable hinges for convenient storage OSHA Compliant - Lockout tagout gate valve developed and tested to help businesses exceed compliance with standards American Safety Supplier - TRADESAFE is a USA based and owned industry expert and reliable safety partner for lock out tag out compliance supplies, Manufacturer: TRADESAFE