The Master Lock No.479 Adaptor Arm for Universal Ball Valve Lockout No.478:

• Add this adaptor to the No.478 Universal Ball Valve Lockout to lock handles in throttled position and to lockout 3-, 4- and 5-way valves.
• Designed to lockout virtually any size and shape quarter turn valve
• Accomodates both standard and odd-shaped handles up to 32mm thick 41mm wide 
• Lockout arm ratchets to lock at any angle, and works with insulated pipes
• Assures the best fit every time
• Complete the lockout with Master Lock Safety Padlock