What's the U screw driver for?
U type screwdriver is middle slotted screwdriver with a screwdriver gap, specifically on the H type screw, the screw socket bulls are the basic screw.
U type screwdriver is a screwdriver is not commonly used, but some manufacturers of the products must be used to remove it, for example: there are several manufacturers of socket is designed using U type screwdriver disassembly and installation.
