Admit it, you’ve given a screwdriver a whack with a hammer before now. These screwdrivers are engineered to withstand really severe work. Use them to knock off encrusted barnacles, force off rusted hose clamps, knock holes through bulkheads! The through handles are fitted with a hex bolster so that a 13 mm spanner can be used for extra torque to break loose corroded fastenings. Tip is to DIN5264-A ISO2380 Black point. Give them some stick, the Chisel Drivers can handle it. Available as a tough driver for slotted screws [175mm shaft with 112mm handle. 10mm x 1.6mm tip] (scroll up) or a complete set for both pozi and slotted [3.5x80, 4.5x90, 5.5x100, 7x125, PZ1x80, PZ2x100]This set will last you a lifetime - you won't regret it!