Freud DS0612BW5 6-Inch Demo Demon Diablo Reciprocating Blade, 5-Piece Permashield coating protects the blade from heat, gumming and corrosion 1 in. Demolition body for straighter cuts with less vibration Ultra-hardened cutting edge for up to 5x longer life than standard blades 6" Length00000000000000 6-12 Variable Teeth per Inch (TPI) Bi-Metal Ultra-hardened cutting edge For Cutting Wood, Wood Composites & Nail Embedded Wood