Open Jump Ring Size: 4mm,6mm,8mm; Lobster Claw Clasps Size: 12x6mm | Quantity: approx 1380pcs, 4mm ring aprox 840pcs, 6mm ring approx 340pcs, 8mm ring approx 140pcs, lobster clasp approx 60pcs | Plastic Box is included. This assortment value pack is easy to manage and convenient for jewelry making and one-stop solution for different color and size of lobster clasp and jump ring