Wera Big Pack 300 Kraftform Plus Lasertip screwdriver set. Kraftform Plus handle has been designed to fit perfectly into the hand to allow for fast, comfortable and ergonomic screwdriving. The handle hard zones glide across the hand for high working speeds, while soft zones provide grip to ensure high torque transfer and comfort during intensive use. Hexagonal anti-roll feature prevents any unwanted rolling. Lasertip technology, on the screwdriver tip, bites the tip into the screwhead to prevent slipping.