LENOX Tools 21221B960GR Gold Power Arc Demolition Reciprocating Saw Blade, For Demolition, Nail-Embedded Wood, Cast Iron, Fire & Rescue Cutting, 9-inch, 10 TPI, 25-Pack Delivers up to 2X longer life versus traditional straight LENOX reciprocating saw blades. The aggressive curved blade design optimizes the blade's angle of attack for faster cutting in a variety of materials. T2 Technology and a precision-applied titanium coating help dissipate heat, extending the life of the blades. Available for wood, metal, demolition, and extreme heavy metal cutting applications. 10 tooth per inch blades are best for use with thick metals, metal demolition, fire and rescue. Made in the USA of global components.