Wera Impaktor 897/4 IMP Stainless Steel Universal Bit Holder With Ring Magnet 05057675001 This 3888/4/1 Universal Bit Holder also features a slim stainless body and strong retaining magnet to magnetise bits. Impaktor heavy-duty Bit Holder with a unique TriTorsion system which features 1 Torsion zone in the bit and 2 in the holder, these are activated according to the demands of the application. FEATURES Universal holder suitable for bits with 1/4\" hexagon head drive as per DIN ISO 1173-C  The retaining ring ensures an optimum fit of the tool in the holder Use with Impaktor bits. The impactor technology ensures an above-average service life Reduces the risk of premature breakage of the holder or bit and increases productivity when screwdriving with power tools  Particularly suitable for use with customary impact drivers  SPECIFICATION Material: Stainless Steel Part Number: 05057675001 Size: 1/4\" x 75mm