All Dive Rite manifolds use two barrel o-rings to seal either end of the cross-bar, which provides better shock absorption and redundancy compared to the old-style metal-to-metal seal manifolds. Both our 200 bar and 300 bar manifold valves have a 180mm isolation crossbar that fits both 7.25-inch and 8-inch diameter tanks and recessed burst disks are protected from accidental shearing. The Dive Rite 200 bar manifolds can be converted from yoke to DIN by removing the insert (doughnut) with a 8 mm Allen wrench. This manifold is our most popular since yoke, 200 bar, or 300 bar regulators can be used with it. Shock absorbing ribbed rubber knobs are rugged, yet easy to manipulate. All Dive Rite manifolds come standard for 3500 psi service pressures. All Dive Rite manifolds and valves come with Viton o-rings and oxygen compatible lubricants and are Nitrox ready up to 40-percent.