Wish these had ML measurements on the side. Measuring the exact amount of resin for blending is very difficult in these. I use plastic shot glasses from Dollarama to measure the A and B parts of my resin, then pour them into these. It is also very difficult to get all of the resin out of the nooks and crannies of these. You might end up with some cloudy pours due to part A or B getting stuck in the bottom ring our outter creases. They're alright, I'll personally be buying different ones that have volume measurements on the sides and no issue with mixing.
