The original Wera folding bag Joker Switch 4, empty, 1 piece tools for rebels: laser tip, laser-treated blade tip. A sharp-edged surface structure is created by means of closely focused laser light. The laser treatment causes a hardness of traces of up to 1000 HV 0, 3. Wera Lasertip clamps firmly in the screw head and prevents slipping out of the screw head. For slotted, Phillips and Pozidriv. The micro-rough surface bites firmly in the screw head and ensures a secure fit of the screwdriver in the screw. Reduction of cam-out effect. Reduction of the required contact pressure.