Zinc and blue-passivated and case-hardened. For use with high density fibre boards. Tri-Lock threadform and shank incorporate the benefits of a single coarse thread with a twin thread start. Spiral point, part thread and under-head ribs for self-countersinking....

Premium Wera Micro screwdrivers for precision mechanical couplings. By supporting the hand on the rotating cap, and due to the fast rotating zone below the rotating cap, lightning fast turning is possible. Time-consuming hand switching is eliminated....