The Vitrex Premium Valved Moulded Power Tool & MDF Mask has a breathe-easy valve offering extra comfort when exerting greater physical effort/body movement. Ideal for working in confined positions (i.e when crouching or bending). Protects lungs against fine toxic particles. Ideal for use with MDF, softwoods, hardwoods, metals and concrete. Suitable for use with most power tools - drills, saws, grinders, sanders, routers etc. EN149:2001+A1:2009 FFP2 NR.This Vitrex Premium Valved Moulded Power Tool & MDF Mask is supplied as a pack of 3.