Build 19 Piece Pneumatic Kits with Technik Parts Contains Air Pump, Piston Pressure Rod, Cylinder,Pneumatic Hose &More,Great for DIY, MOC Tech, Compatible with LegoBuild 19 Piece Pneumatic Kits With Technik Parts contains Air Pump, Piston Pressure Rod, cylinder,Pneumatic hose &More,great For DIY, MO..