SwissGrip screwdrivers • for slotted screws • parallel tip, optimum transmisson of force, no cam-out • convex handle with soft surface, pleasant grip and high torque transmission • color coded by screw type, quick identification • high-quality materials used, resistant to solvents, oils, acids and salts • special alloy based on spring steel, exceptional elasticity coupled with high grade hardening • laser-marked serial number, lifetime guarantee