6pcs Clasps in 3 Sizes : You will receive 6pcs clasps totally in 3 different sizes, about 12-18mm long, 4-4.5mm wide, hole: 2.5/3mm; and 2pcs/size respectively. You can choose proper size when making handmade jewelry. Stainless Steel Color: The spring ring clasps are in stainless steel color, which is classic and fashion, so you can use them to match with various jewelry making findings, not needing to worry about inappropriateness. How to Use: There is a small spring in the ring, when you pull back the tiny lever, a gap is revealed. You can insert a chain or loop into the gap easily. Release the lever and the gap close up. Durable Material: These spring ring clasps are made of 304 stainless steel, which can guarantee high strength and hardness. They are note easy to fade Wide Application: These spring ring clasps are suitable for leather, satin cord necklaces and other stringing materials to create an adjustable necklace or bracelet. Besides, they are also perfect for repairing your existing jewelry or creating homemade jewelry.