Steel: CrV50Bv30 45-47 HRC Chromizing D1: 14 mm D2: 17 mm Length: 30 mm Torx heads "Delo Tekhniki" are made from chrome-vanadium steel using cold stamping with subsequent heat treatment. The heads are hardened and protected from corrosion with chromizing. They can withstand high and prolonged loads. Torx - a six-point profile in which the direction of force is distributed perpendicular to the contact surface, which quickly increases their area as the load increases and practically eliminates damage to the edges. The special textured base of the head improves grip characteristics and prevents slipping in hands.