Abstract: A power tool adapter which can be quickly connected and disconnected to a first power-driven rotary bit having an outer periphery includes an inner sleeve having a first end and a second end. The first end includes an opening for accessing a cavity within the inner sleeve. The sleeve includes at least one radially extending opening. The cavity is sized to complementarily receive at least a portion of the first bit. The first bit is rotatably fixed to the inner sleeve. The second end of the inner sleeve receives at least a portion of a second rotary bit. A locking mechanism is operatively engaged with the inner sleeve. An outer sleeve having a cavity slidably receives at least a portion of the inner sleeve.