This is a clever little tool! You will not know how much you need one until you try it! Works great! No fuss, no muss! Run it around the groove and the plow moves that excess paint right back into the can ... highly effective and makes re-sealing your cans a breeze! And no splatters when you pound the lid closed with a hammer! Buy several - one for each type of paint you use around the house, or the shop!