Wera 05071085001 3855/4 1/4'' Hex Pozidriv Stainless Steel Power Drive Bits are high quality bits for pozidriv screws. Wera Stainless Steel Bits prevent the formation of unsightly extraneous rust and are vacuum ice-hardened. Wera 3855/4 1/4'' Hex Pozidriv ® Stainless Steel Power Drive Bits are designed with a 1/4'' hex and are suitable for holders as per DIN ISO 1173-F 6.3.