Linsoir Beads Bulk Hard Snap 12mm Open Jump Rings with Free Jump Ring Open Tool Value Box Set - Pack of 350 Material: iron Ring size:12mm; Thickness: 1.0mm/ 19 gauge Color: 7 colors in a set,that is gold/rhodium/antique bronze/silver/gun black/red copper/rose gold Quantity: 50 pcs each colors,total 350 pcs Remark: plastic box is included. This value jump ring set is easy to manage and convenient for jewelry making and one-stop solution for different colors.