The Master Lock No. 0488 Rotating Electrical Plug Lockout Device accepts cords with up to 19mm diameter and an electrical plug up to 76mm diameter x 152mm. Device surrounds the electrical plug and protect against accidental reconnection. The unique, patented rotating design allows for easier installation in confined space applications. The tough, lightweight Zenex™ Thermoplastic body withstands chemicals and performs effectively in extreme conditions. Includes high-visibility permanent safety labels. For 240 and 550 volt plugs. Outward/inward rotation allows for easier application and storage Surrounds the electrical plug and protects against accidental reconnection Patented rotating design allows for easier installation in confined space applications Complete with high visibility permanent safety labels (English, French & Spanish) Tough, lightweight, dielectric thermoplastic bodies withstand chemicals Performs effectively in extreme conditions For electrical plug sizes up to 76mm in diameter x 152mm with cord diameter up to 19mm (Most 110 and many 220-volt plugs)