Scuba Choice 3.5" Brass Swivel Eye Snap Hook Clip #2, 12.9mm Opening -Brass clip total length: 92 mm Width:35 mm -Color: Gold -Thickness: 8 mm Clips with any standard D-Rings Swiveling base Perfect for connecting your diving accessories to your BCD(Diameter: 0.8 inch Opening: 12.9mm)(Height 1.4" x Length 3.5" x Width 1.4")