had a brass screw/bolt with a completely rounded off head. I tried every trick I know, couldn’t budge it. Spend £4 in toolstation in this screw remover and it was out in three mins. Simply drill a small pilot hole in the bolt head. Then swop to the screw remover. Leave the drill in reverse and because of the reverse cut thread it drills in as it turns the bolt out. I’m sure a lot of you will already have these but it there might be a few people on here that this might help out.