3M6501QL RUGGED COMFORT HALF MASK 6500 Series (small) | eBay
3M 6502 6500 Series Respirator With 4 Point Harness And Bayonet Connection, English, 15.34 fl. oz., Plastic, 8" x 7.2" x 4": Amazon.com: Tools & Home Improvement
3M™ 6500 Series Quick Latch Half Mask Respirator - 183829 - Northern Safety Co., Inc.
3M™ Rugged Comfort Half Facepiece 6500 QL Series [3M-6500QL] - $36.00 : Arc-Zone.com, Welding Accessories Store
3M 6502 6500 Series Respirator With 4 Point Harness And Bayonet Connection, English, 15.34 fl. oz., Plastic, 8" x 7.2" x 4": Amazon.com: Tools & Home Improvement