Click here to save up to 55% on Wera Tools. Choose from ratchet sets, wrench sets and screwdrivers for any job! Individual testing in a water bath at 10,000 volts so as to ensure safe working at the permitted voltage of 1,000 volts. Kraftform Plus handle for pleasant, ergonomic working that makes blisters and calluses a thing of the past. Hard gripping zones for high working speeds