GPM's Screw Driver Magnetic Hex Driver With Pin (4,5,6mm)-4pc set is specified for hobbyists who need accurate tool control. The diamond-engraved handle offers tactile grip for improved torque control during tightening and removal of hex screws. Pins made from spring steel resist deformation under repeated cycles, enhancing service life. Magnetic tip retention reduces hardware loss and helps maintain alignment when working in tight assemblies.