Ergodyne ProFlex 1650 Black Economy Elastic Back Support Belt With Detachable Suspenders Anchor Points Not to mention they are

Not to mention they are interchangeable with RKI's GX-2009 and GX-2012 4-gas monitors

Volts: 115V/230V AC Single

Just toss in the truck and no more worries about ruined duct

especially for long-term wear

Detects Oxygen

Ergodyne ProFlex 1650 Black Economy Elastic Back Support Belt With Detachable Suspenders Anchor Points Not to mention they areThis all elastic knit back support naturally supports the wearer with its standard design and adjustable two stage closure. Adjust first for exact fit, then use single layer 5" elastic cinch strap for desired level of positive tension when ready to lift. Adjustable 1 1 2" knit elastic suspenders allow support to hang loosely when not lifting. Suspenders can also be detached. Machine washable (Black).