LEGO Technic - CD-ROMs were ground-breaking stuff back in 1997! A pneumatic airtank was pretty special too. Both featured in the LEGO Technic 8299 Search Sub. #LEGOTechnicTBT #ThrowbackThursday | Facebook
Pneumatic Air Tank : Part 67c01 | BrickLink
Pneumatic AIR TANK KIT 2 with cylinder,pump,switch(Hose is compatible with Lego) | eBay
Lego Pneumatic AIR TANK (technic,tubing,hose,air,tank,cylinder,storage,switch) | eBay