Abstract: A unique screw driver tip for screws having recessed sockest of the Robinson type are specifically disclosed. The driver tip has a recessed face which defines between the face and the side walls of the tip cutting margins which act as a scraping devices as the tip is in inserted into the socket to thereby scrape the side walls of the socket clean. This allows proper mating penetration of the tip into the socket and hence mating of the tip with the socket whereby the driver may then be turned and the screw rotated so that the screw may be easily removed. The profile features of the tip allow cleaning of the socket and fip penetration into the socket by one single and continuous motion.

Abstract: A tool holder device for drill bits, screw tip bits and like tools permits rapid exchange of the tools. A holder body of the device defines a tool receiving opening in one end thereof for receiving the shank of a tool therein. A spring clip is secured at one end thereof to the holder body and is movable between an operative position wherein the other end of the clip engages and retains a tool received in the opening in the holder body and an inoperative position wherein the clip is out of engagement with that tool so that the tool can be replaced. An axially movable control pin is received in a transverse bore through the holder body and is of a length longer than that bore.