Special bits with 1/4 Inch drive made from chrome vanadium steel S2 for security screws., 32-piece set in sturdy plastic insert box. Bit length: 75 mm. Hardness: 60 HRC, Typ łba = Sześciokątny, Phillips, Pozidriv, płaski, zakrętarka, zestaw Torq, Torx-Bo,