Emergency Escape Respirators, For Acid Gases ORS NASCO Interchangeable with many other makes Semi automatic Interchangeable with many other makes Semi automatic pull sleeve to connect Couplers shut off when disconnected Brass Natural wood finish handle with White Chinese bristles Steel ferrule Perfect for latex paints soft and flexible nose pads hold securely without pinching Wider nose clip fits a variety of facial types Silicone mouthpiece is more comfortable to wear over long periods Packed in sealable plastic bag (carrying bag sold separately 79BAG) Mouthbit respirators offer a quick and economical method to escape non IDLH emergency situations Large