Review on 🔧 3M 08190 Performance Manual Applicator for 200 ml Cartridges with Steady Application in Black/Gray by Mike Wheeler

I have bought 3m and other applicators and this one is better for spraying epoxy 1:1. But why does this Amazone have 2 2:1 pistons (which I never need) and not a 1:1 piston? A year ago I had glue splatters on the back which is a real mess and it's better to have a larger 1:1 piston which minimizes the chances of the little 'moving disc' holding the glue moving pushes out, doesn't turn sideways and makes a mess .