Apeks XTX50 Regulator, First Stage DST, DINThis item is the first stage only of the Apeks XTX50 (DST), Din The XTX50 Regulator is for the diver who wants the benefits of a feature rich regulator at a moderate price. This popular first stage has four medium pressure ports all mounted on a rotating turret. This results in optimal hose routing while eliminating sharp bends in the hose. The first stage is over balanced resulting in a higher medium pressure at each depth. This translates to a very