Wish Dayz Black 1 Inch Inside Diameter D-ring Lobster Clasp Claw Swivel Eye Lobster Snap Clasp Hook for Strap Pack of 20 (Black 20pcs) Inside swivel tail D ring diameter:1" Lobster clasp total Length:1.63" Snap opening mouth maximum size about:0.48" Lobster all kinds of purse or bag strap connector Full 360 degree swivel eye helps prevent tangles