3M 60921 Cartridges/Filters, Organic Vapor, P100 - Set of 2 earplugs The 500 model has adjustable

The 500 model has adjustable headbands that can be tightened

Manufactured by ‎DOBU LIFE TECH Co

Large size KF94 mask

difference being the manufacturing process of attaching the clips

3M 60921 Cartridges/Filters, Organic Vapor, P100 - Set of 2 earplugs The 500 model has adjustableWe aim to ship within 2 business days or less from Portland, OR. Protection against certain Organic Vapors, including Tear Gas, Asbestos, Mold, Silica Cartridge and filter combo for exceptional NIOSH P100 filter efficiency Advanced Electret Media (AEM) provides lightweight, easy breathing comfort Versatile protection against a wide range of oil and non oil based particulate contaminants Bayonet compatibility allows use with many 3M half and full