These swivel lobster clasps Great for crafting, making, and DIY projects of all kinds. These Lobster Claw Clasps feature a 1 Inch D-Ring (Inside D Ring Measurement) and are 1 5/8 Inches Long, can be applied to attach to the backpack, handbag, purse,Custom Key Fobs, and other small objects, The lobster clasp hook is a snap closing accessory, securely snaps to close which ensures your items won't fall out, and each clasp opens and closes easily and smoothly, save you much effort and bring you more convenience.