3m 6500 series reusable half masks 3m 70071668118 this reusable half mask from 3m8482 is ideal when tackling dirty and tough jobs protecting against gases vapours and particles the mask is equipped with a 3m flexible bayonet connection system allowing connection to a broad range of twin lightweight filters other features and benefits includeadjustable head harness assemblysilicone face seal providing comfort and stability overmoldedlow profile design with fewer parts and crevices f