Drop-forged. With close tolerance jaw width. With optimised profile shank for specially secure grip and ergonomic working. Exceptional tool life and wear resistance. Ring end with HT-Drive profile. Standard: DIN 3113 A / ISO 3318 / ISO 7738 Material: Chrome vanadium steel- chrome-plated. Note: HT-Drive – the particularly close-fitting profile. Advantage: – Bolts are gripped on the flanks. – The bolts are protected. – Longer bolt life. – Larger contact surfaces between bolt and tool. – Secure grip and higher torque transmission. wrench length L: 125 mm maximum jaw height h1: 5 mm maximum ring height h2 max: 9 mm