Image Item No. Description By  99021  Pneumatic Hose Connector with Axle Connector Catalog: Parts: Pneumatic 5  x191c01  Pneumatic Pump Small (5.5L) Catalog: Parts: Pneumatic 1  19482c01  Pneumatic Pump Small (6L) V2 Catalog: Parts: Pneumatic 1  4697a  Pneumatic T Piece First Version (T Bar) Catalog: Parts: Pneumatic 3  4697b  Pneumatic T Piece Second Version (T Bar with Ball in Center) Catalog: Parts: Pneumatic 44