Quik Stik®+ Oily Surface Mini Solid Paint Marker, 5 16 in dia Medium Bullet, White no checkout allows mask to hang down 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 high strength with slow cure speed to permit readjustment of parts during assembly Prevents leakage and loosening from shock and vibration self storing cap keeps the marker clean and fresh between uses Cured marks will withstand temperatures in excess of 500° F (250° C) Industrial strength paint dries quickly for long lasting