1. there are pieces of double opening lobster clasp locks in the package, can match your different bracelet/necklace, the sufficient quantity will meet your replacement need. 2.The bracelet extender clasps has the size about0.6x0.32in, the proper size is suitable for small and medium-sized DIY jewelry design or crafts making, meeting your various jewelry needs. 3.Double Open Design:s925 Silver Lobster Clasp are equipped with 2 claw clasps at 2 ends, suitable to connect chains.its really easy to use - just push the protruding at the lobster clasps down and open them to attach with your chains or jewelry necklace items.It's locked securely and 't open itself.protect your small items from falling off 4.High Quality Material:Our Jewelry Clasps made Of s925 sterling silver,stronger and more durable, will never fade, rust, tarnish.Legible Engravement that will Never Wears 't have to worry about losing your precious necklace 5.Widely Used:compatible with various DIY jewelry.make exquisite jewelry crafts as gifts.Suitable for 's day, mother's day, christmas, birthday, anniversary, wedding, party or any special occasions. Colour:silver Material:silver Package Contents: 1 x Lobster Clasp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.