Abstract: A drill chuck key for use with a conventional Jacobs-type drill chuck includes a cylindrical shaft having a bevel gear secured adjacent one end. A knob has a central cylindrical boss receiving an opposite end of the shaft. A roll pin extends through aligned apertures in the boss and the shaft, securing the knob for rotation with the shaft. A circular ring is received with clearance on the shaft, between the bevel gear and the knob. The ring has a diameter less than the bevel gear and the cylindrical boss and greater than the shaft, such that the ring is captured on the shaft. A chain is connected to the ring for securing the drill chuck key to a selected mounting point. This arrangement allows rotation of the chuck key, without release of the securing chain.