Strong Magnetic: Our magnetic clasps have strong holding strength to keep jewelry more secure, you'll see how long the magnets last. Just attach these magnetic clasps to your favorite piece of jewelry, snap open, snap closed, and you're done Magnetic Lobster Clasps: Suitable for necklace, bracelet and jewelry making, can also help adjust the length of the bracelet or necklace, and it has beautiful appearance, make your bracelet and necklace more distinctive. The sizes of the magnetic lobster clasp are as follows, the total length of the magnetic buckle is 40mm, the outer diameter of the magnetic buckle is 6mm, and the outer diameter of the magnetic buckle is 8mm. Accessory made for DIY jewelry