ProTool 0103 100-Piece 3/16" Snap Fastener Refills-3/8 Outside Diameter Add functional snaps to shirts, jeans, jackets, bags and crafts - just about any fabric item Attach with clean finish that holds-up to wear & machine-washing; precise 'snap' and pull to release Sharp-looking, durable bright-nickel finish over brass & steel that won't rust or tarnish Snaps have popular 3/16" (5mm) stud/barrel and are 3/8" (10mm) outside diameter 25 pieces each of stud & socket plus 50 backs to make 25 complete snaps; pliers kit sold separately