Features: Make from Aviation Aluminum, light weight, tough, high strength, strong corrosions resistant, wear-resistant and enduring. Perimeter 7/16inch side holes for mounting lights, tanks bottles, lift bags and other accessories. Slots to accepts directly threaded belt bands for single tanks diving. Slots for crotch straps, universals fits 1inch and 2inch standard webbing. Great gears equipment for technical scubas diving and divers. Specifications: Component: Aviation Aluminum Color: Black/Silvery Thickness: about 3mm/0.12inch Size: about 392x278mm/15.43x10.94inch Package Includes: 1pc Diving Backplate note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.