This is a lot of 40 fine heavy gauge infinity shape sterling clasps that are Hallmarked 925. They are 12 mm long and about 8 mm wide and 3mm thick. VERY high quality findings for your high quality jewelry. Remember high bidder getsa generous lot of 40 pieces and free shipping. 100% satisfaction or your money back. Please take a look at our other auctions at primegoods on Ebay. Any questions, just ask. Thanks.