3M Collar FT-15 (1/Case)PRODUCT DETAILS Collar for fit testing; to be used in conjunction with 3M Test Hood FT 14 Used with the 3M Qualitative Fit Test Apparatus FT 10, FT 30 and 3M Training and Fit Testing Case FT 20 Can be used to check face to respirator seal on any particulate respirator or gas vapor respirator with a particulate prefilter OSHA Compliant For Occupational Use only Used with 3M Qualitative Fit Test Apparatus FT 10 and FT 30 and 3M Training and Fit Testing