Tianbang Silvery C Shape Lobster Clasp Claw Swivel Hook with 1" Key Ring for Strap Pack of 10 Lobster clasp tail hole size:0.16"X0.12".Key ring diameter:1". Lobster clasp total Length:1.25". 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.