Freud DS1212BW25 Diablo Demon 12" 6/12 TPI Wood Reciprocating Saw Blade 25 Pack Bi-Metal Reciprocating Blade are the most innovative blades on the market, delivering break-through 4x performance than standard blades Unique feature combination of Ultra-Hardened Bi-Metal teeth, friction-reducing coating, High performance Variable Tooth Design provides users with never-seen-before performance and ease of use. Plunge Tip Design Bi-Metal Ultra Hardened Cutting Edge