Unique Bargains 50 Pcs 37mm x 13mm Silver Tone Metal Lobster Trigger Claw Swivel Clasps ClipCategory: Metal Magnet ClaspsA lobster claw clasp opens when you push backwards on a little lever that slides along a circular ring. Once the clasp is open open you simply insert the chain or loop that is attached to the piece you are connecting into the open circle, then release the lever to return it to the closed position. There is a tiny spring inside the clasp that puts pressure on the mechanism to keep the spring ring shut until you decide to open it again.Lobster claw clasps are commonly used to secure necklaces, bracelets and anklets, but some people have a difficult time operating very tiny spring clasps by themselves. Clasps that attach to a good sized loop that you can handle easily--or to a rigid piece--are easier to handle.For CALIFORNIA residents only: WARNING: This product contains chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm.Please note that by posting this Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in a product. With Unique Bargains' products, the exposure to these chemicals may be of no significant risk to you, but out of caution, we have elected to place this warning on our site to make sure our customers are informed.You can find more information at http://www.oehha.ca.gov/proposition-65/about-proposition-65.