KONMAY 3 Sets Magnetic Jewelry Clasps Rectangle Shaped, Shiny Rhodium, 40.0x3.0mm Material: Alloy and magnets, lead and nickel free Size: 43.0mm(L)x20.0mm(W)x5.5mm(H), hole size: 40.0x3.0mm Color: Shiny Rhodium Each pack includes 3 sets The clasp is rectangle shaped, and the back of the clasp is with arc, makes it fits the wrist perfectly. This big size glue-in style jewlery end cap clasps, easy to use, great for leather cord, kumihimo braids, leather straps or beadwoven projects