Medium Duty G Series, Oxygen, CGA 540, 3000 psig inlet no checkout Tinted lens reduces eye fatigue Tinted lens reduces eye fatigue and eye strain caused by blue light Available in a variety of lens options for indoor and outdoor use Rubberized eye seal provides exceptional protection against dust and other particles Adjustable headstrap improves fit and protection Can be fitted with an Rx prescription lens adapter while maintaining impact protection approval single locking Proprietary rustproofing for longer life Commercial grade padlock features superior protection from drilling and prying Choose between Keyed Different (KD) Easy to read high contrast gauges for clarity Color coded knobs indicate gas type Designed for better comfort when adjusting gas pressure High Strength alloy bonnet with nearly twice the yield strength of brass Lower profile regulator with less knob stickout