Sonic Foam System - Hex Ball Grip Key Set - 7 Pieces - 1/3 (Small) Subtype - Compressed Air Accessories you probably want to skip

you probably want to skip this

O-ring for thread seal

It's shown with the 100' 5/8" OD High-Pressure hose

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

but they also serve a functional purpose - keeping the dribble from your pressure washer hose from dribbling

Sonic Foam System - Hex Ball Grip Key Set - 7 Pieces - 1/3 (Small) Subtype - Compressed Air Accessories you probably want to skipThese 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.