Sonic Foam System - Hex Ball Grip Key Set - 7 Pieces - 1/3 (Small) Subtype - Compressed Air Accessories Outlet = 3/8" Female Coupler:

Outlet = 3/8" Female Coupler:  This 3/8" coupler would receive a 3/8" plug

And the 959mm goes with the 1060mm Corner

Simply unscrew the watertight housings and remove the spent cartridge

O-ring for thread seal

Sonic Foam System - Hex Ball Grip Key Set - 7 Pieces - 1/3 (Small) Subtype - Compressed Air Accessories Outlet = 3/8" Female Coupler:These are the tools I've decided to use at OGHQ, they have a nice quality to them with good ergonomics. They aren't intended to replace everything but there is a great variety of tools offered here. For the price, you cannot beat them vs something that's 2x or 3x the cost like Snap On.