Wera 05135532001 851/4 J 1/4'' Hex Phillips Power Drive Bits are high quality phillips screws optimized for Japanese Phillips screws or Asian Phillips screws. Wera 851/4 J 1/4'' Hex Phillips ® Power Drive Bits are designed in particular for applications with very small dimensions pursuant to the Japanese Camera Industrial Standard. Wera 851/4 J 1/4'' Hex Phillips ® Power Drive Bits are tough and viscous for universal use and are suitable for holders as per DIN ISO 1173-F 6.3.