Central Pneumatic 17 Piece Air Tool Accessory Kit Kit includes dual wheel truck type chuck, inflating nozzle, inflating needle, (2) 1/4'' nipples, blow gun, (2) gun tips, 1/4'' NPT couplings, quick release coupler, (4) 1/4'' male quick coupler nipples, and (2) 1/4'' female quick coupler nipples. Comes with 0 to 50 PSI pencil gauge Steel and brass construction