88/1 Vario setProduct Description: Wera 88 1 Kraftform Vario interchangeable screwdriver set. Wera's famous ergonomic Kraftform handle, with interchangeable blade system. Like no other, the Kraftform handle is shaped to perfectly fit the hand for the best possible screwdriving experience. The multi component design features hard zones for rapid working speeds and also softer gripping zones that provides high torque transfer and extreme comfort during intensive use.