This 200 Piece Kit Includes 4mm Gold Plated Open Jump Rings & 51mm Sterling Silver Head Pins 100 New 4mm Gold Color Plated Open Jump Rings This is a set of 100 gold color plated round unsoldered open jump rings These are for connecting jewelry parts such as clasps, charms, links, etc Each measures 4 mm (1/8") in diameter Sterling Silver Head Pins Great for Making Necklaces, Bracelets & Dangle Earrings This is a new set of sterling silver head pins Great for making necklaces, bracelets and dangle earrings Each is 24 gauge and measure approximately 2" (51 mm) long