Description: Heavy duty technical scuba diving back plate with single tank adapter for backplate, tough, high strength, strong corrosion resistant, wear-resistant and durable Perimeter 7/16" side holes on backplate for mounting lights, tank bottles, lift bags and other accessories Slots to accept directly threaded cam belt bands for single tank diving Slots for crotch straps, universal fits 1" and 2" standard webbing The single tank adapter is perfect for scuba divers switch their harness system between double and single tank rigs or between back mount and side mount configurations Great gear equipment for technical scuba diving and divers Specification: Scuba Diving Backplate Material: High strength 5052 Aluminum Size (L x W): Approx. 39.7 x 26 cm/15.6 x 10.2 inch Color: Black Scuba Diving Single Tank Adapter for Backplate Material: Aluminum alloy Size (L x W): Approx. 30.4 x 6.6 cm/12 x 2.6 inch Center Hole to Hole size: Approx. 28 cm/11 inch Slot Length: Approx. 5.3 cm/2 inch Thickness: Approx. 2 mm Color: Black Package Includes: 1 Piece Scuba Diving Backplate 1 Piece Scuba Diving Single Tank Adapter for Backplate (with screws nuts washers) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!