This pound thru screwdriver set is designed to withstand being hit with a hammer. The screwdrivers are ideal for fastening, chiselling and loosening seized screws. There is an integrated shock absorbing impact cap for striking with a hammer. The hexagon blades extend through the handle for maximum strength. The blades are made from hardened chrome vanadium steel, which is chrome plated for corrosion protection. The blade tips are magnetic to hold the screw in place, making it easier to deliver more accurate force and precise fastening and loosening. The tips also have a black phosphate coating for added durability. They are fitted with an ergonomic soft grip comfort handle with drive type colour identification. The handle shape helps ensure the screwdriver does not roll off flat surfaces.