Used to have a set of Keep-Ups. Tough little plastic items that did the same. Slide it up into the threaded hole, about six of them on the average engine. Slip the gasket over them, they would hold the gasket in place. Then slide the oil pan on, this is all from the bottom side. Put bolts in the other holes, then wiggle them a bit and they would come out. Looks like this set would do about the same thing, very handy.