Constructed of aluminum to minimize weight, this backplate is individually press-formed with all edges de-burred. The plate includes 2 inch (5cm) slots for the harness and crotch strap as well as 10 perimeter holes for attaching additional equipment such as stage bottles and canister torch. There are 3 sets of tank mounting holes along the plate’s center line, each pair 11 inches (27.9cm) apart, allowing the diver to achieve an ideal, custom tank-to-torso position.