Ergonomic design for effective work: The rounded two-component grip shape with flexible buttons ensures fatigue-free and pain-free operation during continuous use. Clear size indications are provided through a laser marking process on matte chrome-plated shafts made from a special steel alloy. These shafts are continuously hardened and stress-relieved, offering a balanced ratio of torsional stiffness and toughness. The oil- and acid-resistant special rubber grip does not stick and features finger grooves for improved grip during quick rotations. The machined black tip ensures maximum precision in holding screws and reduces tool slippage.