Size:Pack of 2 What our premium buckles can be used for: -- bracelets, necklaces, anklets, jewelry making ,dolls, keychain, ring -- hanging photos, drapes, curtains, and many other home uses -- handbag, backpacks ,luggage straps, belts for jeans skirts, tote bags -- making lanyards, keychains, zipper pulls, purse, handmade dog collars, cat hammocks, puppy harnesses, use for a leash-to-collar connection -- Any other DIY projects, art projects, keychain projects and sewing projects you could imagine :) Features: Quick to install. Just press the lock to catch your dog leash and link with dog collar the D-ring. Rust resistant .Galvanized swivel snap hooks are rust-resistant because of the high-quality zinc alloy. Strong heavy duty. The swivel snap hook can hold the pull of 175 pounds. Safety lock catch. Our snap hook is strong enough to hold the leash for your dogs well Customer Service: If you have any problem of our product, you can click “seller contact” button in your Amazon account to email us. we would be delighted to help you and we will reply as soon as we can.