Meets your requirements : Robust and precise bits for general fastening in trade and industry. Saves time : Simple and quick recognition of profile sizes thanks to contrasting laser marking. Increases your efficiency : Best rotation characteristics for stable fastening processes. Increases your efficiency : Optimum access to low-lying screws thanks to extra-long 70 mm bits. Product dimensions : 70 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