International insulated Phillips screwdrivers with an injection moulded nylon 11 handle which exceeds the requirements of IEC 60900 the industry standard for live line working In addition this tool meets the requirements of Category C which requires it to perform at extreme temperatures of -40°C to +70°C making it unique in this category ITL insulated tools are the toughest in the market being virtually indestructible ITL also offers the best guarantee in the market - a lifetime warranty on the tool and insulation plus a 30 day no quibble money back guarantee