3M Versaflo M-Series Helmet Assembly - No ADF Filter collet there is some variation in

there is some variation in ohm value

With the UltraFlex extraction arm and its built in work lamp and auto start sensor

oil-free Operating Temperature Range -10° to +50° C (14° F to 122° F) Inlet Air Pressure Requirement 90 – 125 psi (6

Robust die cast aluminum gear housing for optimum heat dissipation and durability

Secures with a heavy-duty spring steel belt clip

3M Versaflo M-Series Helmet Assembly - No ADF Filter collet there is some variation in3M Replacement Shell M 153SG This item does not include the Auto Darkening Filter. Compatible with 3M Versaflo Respiratory Helmet Assembly M 405, 3M Versaflo Respiratory Helmet Assembly M 407, 3M Speedglas 9100V Auto Darkening Filter, 3M Speedglas 9100X Auto darkening Filter, 3M Speedglas 9100XX Auto Darkening Filter Sold in quantity 1 case Manufacturer part number: M 153SG 3M ID 7100168249