This set includes a variety of chain sizes and designs, perfect for handicrafts and making accessories. Purchased from Kiwa Seisakujo, I used about 6 round jump rings. The lobster clasps and adjusters are new and unused. Please feel free to ask if you have any questions. Please feel free to ask if you have any questions. - Product Name: Ami Kan No. 1 G - Price: ¥209 - Quantity: 10 - Product Name: Lobster Clasp No. 16 Approx. 15x6mm G - Price: ¥198 - Quantity: 1 - Product Name: Round Jump Ring 0.6x4G 2g - Price: ¥88