you REALLY shouldnt be pulling bindings off and then mounting them in the same holes. it really increases the likelyhood of pulling them out. your prolly better off to have the holes filled, and remount them a cm forward or back.
basically it's a little coil of steel. on the outside it has a screw pattern that is wider than the original hole to it 'bites' really well. on the inside is a thread that matches the original screw. Presto! you can mount the bindings up no worries