7000 Series Respirator Facepiece, Large, Multi Gas Vapor, Thermoplastic Elastomer ORS NASCO and studs to prevent loosening and studs to prevent loosening due to vibration Works on all metals Lever designed for better hand clearance and better hold Made from high quality materials for both high conductivity and improved cable connections Ergonomically designed heavy duty shock proof nylon handle compact design fits well under welding helmets and with safety glasses Mask drops down for convenient storage around the neck or locks down for custom fit Adjustable head cradle and curved neck buckles for extra comfort high tech look and increased worker acceptance Light weight design plus extra wide sealing area provides all day comfort Low profile