[Sterling Silver Claw Clasps]: Jewelry clasps are made of 925 sterling silver, moonlight-like silver is sparkling, which makes it more textured. Not easy to rust or fade, great for long term wearing. [12Pcs Charms In A Box]: 12Pcs lobster claw clasp in 4 sizes, 3pcs for each size, all packaged in a small box: 68x52x11, easy to not lose the pieces, can keep charms for dirty. [Easy to Use]: The bracelet clasp is equipped with a spring inside,which can be opened with just a gentle press.Release your hand and the clasp will close on its own. [Size]: Spring ring clasp 1: 7x6x1mm, hole: 1.5mm; Clasp 2: 9x7x1.5mm, hole: 1.5mm; Clasp 3: 10x8x1.5mm, hole: 1.5mm; Clasp 4: 11.5x9.5x2mm, hole: 2mm. [Best Gifts]: This spring ring clasp can be used to create different styles of jewelry, such as necklaces. The jewelry can be given to your family, friends, classmates and colleagues on Christmas, New Year, Thanksgiving and birthday.