International insulated screwdriver set of 5 with injection moulded nylon 11 handles which exceed the requirements of iec 60900 the industry standard for live line working in addition these tools meet the requirements of category c which requires them to perform at extreme temperatures of 40c to 43 70c making them 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