Classic heavy duty screwdrivers1 shatter resistant acetate handle wipe clean oil acid resistant 2 large square shape handle design for maximum torque 3 handle injection moulded directly to blade giving the ultimate bond for increased reliability durability 4 anti roll flats to prevent the screwdriver rolling off sloping surfaces5 chrome plated toughened alloy steel blade for increased strength durability6 precision machined tip for an exact screw fit damage free screwdriving