Bullet Tools 10 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 foam up to 2" EPS (Expanded Polystyrene/White/Bead Board), 1.5" XPS (Extruded Polystyrene/Blue/ WARNING, Do not extend blade beyond the surface of the foam For best results, operate under 3000RPM