Sonic Foam System - Combo Set 1/2" - 66 Pieces - 26" (Medium) Subtype - Waxes / Sealants / Coatings / Dressings These are a 12/3 AWG

These are a 12/3 AWG locking extension cord

and you will need some adapters

Polish the glass if necessary

One end connects to your existing Karcher hose & the other connects to an aftermarket hose with a 3/8 coupler

It also won't do well if you are really hard on your windshield

Sonic Foam System - Combo Set 1/2" - 66 Pieces - 26" (Medium) Subtype - Waxes / Sealants / Coatings / Dressings These are a 12/3 AWGThese 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.