Lego Education Pneumatics Add-on Parts Set 9641 COMPLETE SET OF MANUALS ONLY | eBay
LEGO Education: Pneumatics Construction Set, 9641, (Hose,Tank,Pump,Manometer) | #964877444
Rayque's Blog: [Lego] 9641 + 9688 GET!
Lego Education Trinidad & Caribbean - Pneumatics Add-on Set- $405.00 This add-on set is intended to be combined with the Simple & Powered Machines Set. It includes pumps, tubes, cylinders, valves, an
LEGO 9641 Pneumatics Add-on Set Set Parts Inventory and Instructions - LEGO Reference Guide