SQ Series Bar Clamp, 8 in, 5 1 2 in Throat, 2660 lb ORS NASCO Cartridges come with a new Cartridges come with a new inhalation valve for less maintenance and fewer parts to inventory Conforms to the contours of your face without pressure points Extra wide flange seals easily and stays sealed even when talking Low profile provides a wider field of vision than any other respirator Soft yet durable facepiece designed for comfort and petroleum oils Neoprene exterior Designed for use with all electric pumps High quality Nitrile inner tube high carbon Acme threaded screw – tempered and quenched to give greater loading capacity and longer service life The high strength sliding pin T Handle is sized according to the clamp’s capability all steel bar clamp Comes with standard rail profile and standard pad Heat treated