3M™ Secure Click™ Multi-Gas/Vapor Cartridge. Secure Click™ connection style enables a quick, simple connection of cartridges. Secure Click™ cartridges are dual-flow to allow easier breathing and greater comfort. Use with NIOSH-approved 3M™ Secure Click™ Face pieces. NIOSH-approved for protection against certain organic vapors, sulfur dioxide, hydrogen chloride, chlorine/ammonia/methylamine/formaldehyde or chlorine dioxide or hydrogen fluoride or hydrogen sulfide.