Outward/inward rotation allows for easier application and storage Surrounds the electrical plug and protects against accidental reconnection. For electrical plug sizes up to 75mm in diameter x 152mm with cord diameter up to 19mm (Most 240 and many 550-volt plugs). 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