Ideaful to cleaning your gun with patches, Riliable quality, easy fitting Save time, save money Long working life Gun cleaning patch holder Material: Plastic nylon is most porpular and cheaper in cost Steel in blacked brass steel wire twisted Size: 12G, (suit for 10G, 12G, 16G, 20G,28G, .410) .17--.235cal. .30--.375cal. .40--9mm