A tool driver having a shaft with a longitudinal axis and opposite ends. A boss is positioned at one of the ends. A tool collet is positioned at the other of the ends. The boss has a bore extending axially thereof forming debris cavity. An actuator on the shaft. A pair of oppositely disposed pins on...http://www.google.ca/patents/US5282804?utm_source=gb-gplus-sharePatent US5282804 - Tool driver
