Bullet Tools 7.25 in. CenterFire Dust Free Foam Blade for cutting EPS, XPS & Poly-ISO insulation Razor sharp edge slices through foam without producing dust Carbon steel body with high performance ceramic coating Thermal break design concentrates heat on the cutting edge for a factory quality cut Cuts EPS (Expanded Polystyrene/White/Bead Board/r-tech insulation) foam, XPS (Extruded Polystyrene/Blue/Pink) foam, and cuts handi foam/seal Cuts Poly-Iso (Polyisocyanurate/rmax insulation) foam, and Foil or felt faced foam