Amanaote Silvery 1" Inside Diameter D-ring Lobster Clasp Claw Swivel Clasp Hook Pack of 6 Material:Metal.Total length:1.9",the tail inside D ring diameter:1".1 inch=25.4 mm. Excellent for quick connect/disconnect purse & bag straps and more The lobster claw snap hook with spring-close gate for extra security Lobster claw snap hook with spring-loaded automatic gate Full 360 degree swivel eye helps prevent tangles.