Pneumatic AIR TANK Blue kit 1 with cylinder,pump (Hose is compatible with Lego) | eBay
2.5 Inch Y Shaped Hose Connector, Shut Off Valves (ToolUSA: LFOR-8240) - Walmart.com
LEGO Education: Pneumatics Parts Set, (Hose,Tank,Pump,Switch,Connector) | #1058249009
MOC Parts Pneumatic Hose Air Pump Push Rod Putter Switch Piston Air Tank Pump Compatible With legoeds Pneumatic Building Blocks| | - AliExpress
LEGO 4 pcs Technic NEW PNEUMATIC LOT of 2 Mini Piston 32mm Cylinders AND 2 Old Grey Air Valve Switch- Buy Online in Bermuda at bermuda.desertcart.com. ProductId : 32799353.