Tianbang Gun Black 0.32" Inside Dia Oval Ring Lobster Clasp Claw Swivel Eye Hole for Strap Pack of 20 Swivel tail Oval ring inside diameter:0.32". 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.