... steel , chrome-molybdenum steel ,chrome-vanadium steel ,carbon steel .Handle:PP, TPR ,TPE, PP+TPR, PVC.Blade:round blade , ... goods. Details informations: New design Screwdriver 6pc go-throught handle screwdriver set 1.Type: Newly design good screwdriver set 2 ... quality chrome-vanadium steel, through hardened,chrome-plated.3. Handle: rubber handle with logo pp+tpr Round blade Ergonomic han5. Norms: ...