Product dimensions : 50 x 6 x 7 mm (LxWxD) Drive : DIN 3126, ISO 1173, style E 6.3. Application : For fastening and unfastening positive/ negative screws in switchboard systems, fuse boxes, terminal blocks and relays. Material : High grade chrome-vanadium steel, through hardened. DIN 3126, ISO 1173, Style E6,3