3 4 in Drive Ratchet, Round, 42 in, Black no checkout resistance welding systems resistance welding systems allows mask to hang down around the user's neck when not in use Ventex® valve lets the hot air out faster so workers breathe easier and stay cooler R95 protection against both oil and non oil based particulate aerosols Added carbon layer helps filter out nuisance levels of ozone organic vapors Soft foam nose cushion for added comfort and no pressure points one piece handle Handle design allows operator to “feel” the fastener Precision machined 45 tooth head gives long life and short arc swing Kit is easily removed for cleaning or replacement Drop forged