Long bits PH2x100 mm are special screwdriver tips with a cam or collet chuck. They are complete with a universal hex shank and made of special metal alloy in a cold-rolled way. The cross-shaped tip is hardened to 60 HRC. The bit is designed for performance in severe working conditions, where it is impossible to crawl with a standard 25 or 50 mm bit. Bit slots are equipped with special ribbing, thanks to which it does not tear edges off screws but pops up when tightening them. Bits are suitable to twist conventional and self-tapping screws with hats for a conventional cross-shaped tip. It can be used both in screwdrivers and drills with compulsory speed adjustment.