Package lists(1 Set): 16 in 1. 1× Face Mask 2× 501 Filter cover 2× 6001 CN Cartridge 10× 5N11 Cotton filter. This mask completely equivalent to 3M 6800 comprehensive protection function, can used 3M filter cotton, high quality products, low prices, very popular! A large number of procurement, has a surprise discount! Full Facepiece Respirator Large lens for wide field of view Lightweight, balanced design Silicone faceseal for greater comfort and durability.