Tempered Steel Construction, Durable Black Oxide Finish, 18 Common Sizes. A general-purpose assortment of snap rings. Made by Maxcraft a generous 300 pieces. Includes: 20 pieces of 3mm, 10 pieces of 4mm, 15 pieces of 5mm, 25 pieces of 6mm, 15 pieces of 8mm, 20 pieces of 10mm, 15 pieces of 11mm, 15 pieces of 12mm, 25 pieces of 13mm, 15 pieces of 14mm, 20 pieces of 16mm, 25 pieces of 19mm, 15 pieces of 20mm, 20 pieces of 22mm, 15 pieces of 25mm, 15 pieces of 26mm, 10 pieces of 28mm, 5 pieces of 32mm.