GRAFF offers special screwdriver bits PH2x50 with magnet holders for clamping in all types of chucks with cams or tongs. A screwdriver bit itself is a composite tool consisting of a shank and a magnet. Thanks to a bit you can perform installation works with one hand because a self-tapping screw or a screw is securely fixed in it. It is suitable for difficult operating conditions when you can’t bump into the tool with both hands. Screwdriver bits are made of cold-formed steel hardened up to 60 HRC.