More informationProfessional cordless impact screwdrivers are very efficient and require impact bits. Witte impact bits are specially designed to work with these types of tools. Their greater resistance and longer useful life compared to standard bits are due to their: Unique torsional shape · Highly flexible material · Hardened special steel Its compact design with a length of 38mm offers: · Direct application in cordless screwdrivers without the use of bit holders · A combination of an optimal integral torsion area and great handling control. screwdrivers with tightening torques greater than 25 Nm. 1/4 "guide.