Tianbang Black 1.5" Inside Diameter D Ring Lobster Clasp Claw Swivel Hook for Strap Pack of 6 Swivel tail D ring inside diameter:1.5". Lobster clasp total Length:2.5". Snap opening mouth maximum size about:0.2". Lobster all kinds of purse or bag strap connector. Full 360 degree swivel eye helps prevent tangles.