Dritz 15mm (5/8") heavy duty snaps are hardware fasteners used in DIY sewing and repair projects to create a functioning closure. Heavy duty snaps are ideal for garments such as jackets, coats, vests, tops and sportswear Can be used on reversible garments; substitute cap for post on reverse side .Heavy duty snaps are also popular for making accessories such as bags, totes, belts, fobs, wallets and device cases . Jewelry making projects such as cuff bracelets often call for heavy duty snaps. Heavy duty snaps can be used to repair and replace utility items such as boating covers, tents and camping gear .This package includes 7 snap sets (each set includes a cap, socket, post and stud), and the hand tools to apply them is Brass.