Ninja PRO V2 regulators are fully rotational so you can set the gauge and fill nipple in any position you want without digging into your wrist. This regulator, like all Ninja regulators, also features our ball valve design which gives you 30% increased flow over other regs. This regulator comes standard with durable brass alloy bonnet, mini fill valve and micro gauge. ALSO Available as SLP and SHP and 3k rated for 3000 psi tanks.