Astro Pneumatic. Grey Pneumatic. Grey Pneumatic 1143QL 3/8" Dr 3" Quick Lock Extension. Grey Pneumatic 1018UMSD 18Mm 3/8Dr Univ Semi-Deep. Impact Socket 3/4" Drive, 1-1/2 13/16 Sq. Socket has two openings, eliminating the need for two separate sockets.