Sonic Foam System - Combo Set 1/4", 3/8", 1/2" - 156 Pieces - 34" (Large) and Brushes *** I don't recommend this

***  I don't recommend this option

Pressure relief safety valve

A minimum pressure of 30 PSI is required to permit this valve to function properly

Make sure you leave enough room between the wall and the unloader valve (red knob) to operate

There is no other way to put this

Sonic Foam System - Combo Set 1/4", 3/8", 1/2" - 156 Pieces - 34" (Large) and Brushes *** I don't recommend thisThese 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.