Made from 3M high performance filter media for effective filtration efficiency. Lightweight and provides low breathing resistance. 3Mâ„¢ Bayonet Connection System ensures precise and secure locking. Low profile and well balanced twin filter design. Suitable for use with 3Mâ„¢ 6000/7500 Series Half Face Respirators and 3Mâ„¢ 6000/7000 Series Full Face Respirators. 1 pair per pack. Purchase 50 pairs to receive a carton.