Metal D rings is make of stainless steel, offering excellent durability in saltwater environments D Buckle is suitable for a variety of applications, including scubas diving, surfboard accessories, luggage hardware, hammock hanging, and more Stainless Steel D rings features an open design for easy connection without disassembly D Shape Buckle features a semi circular designs, offering unique aesthetic and functional advantages The compact design makes it easy to carry without adding burden, suitable for various diving trips