The Cetacea BCQR4 was designed to attach to your BCD D-Ring but with the 1 inch split ring, you can basically attach it anywhere.
The Cetacea BCQR4 is made up of 1 inch Stainless Steel split ring attached to 1 inch nylon webbing and a female 1 inch quick release buckle. This is very similar to the BCQR1 but uses the split ring instead of the BCD clip. The Split ring will keep the clip better secured and the accessory closer to the diver with less range to swing. This clip is great for attaching to your camera of anything with a little extra weight or value as it is more secure and far stronger having the split ring.