The Master Lock No. 484 Rotating Gate Valve Lockout Device features a 86mm depth and 101mm stem opening for 20,3cm to 33cm diameter valve handles to surround the valve operating handle to protect against accidental valve opening. The unique, patented rotating design allows for easier installation in confined space applications. Tough, lightweight, dielectric Zenex™ Thermoplastic body withstands chemicals and performs effectively in extreme conditions. Includes high-visibility permanent safety labels.