The Ax™ With Carbide Teeth, Engineered to Deliver Long Life In The Toughest Applications While Being The Fastest Carbide-Tipped Reciprocating Saw Blades On The Market. These New Blades Will Deliver 30X Longer Life Over Standard Bi-Metal Blades and 2X Faster Cutting Than Other Carbide Blades. The Ax™ With Carbide Teeth Features Optimized Carbide Tipping Technology That Delivers Extreme Life. A Fast, Aggressive 5 Tpi Blade Design Allows For The Fastest Cutting In Nail-Embedded Wood and A Wide Range Of Reside