The AX with Carbide Teeth SAWZALL Blades for Pruning & Clean Wood are designed for the fastest above and below ground cutting applications. These SAWZALL pruning blades offer up to 50X more life vs. carbon steel reciprocating saw blades available today. The MILWAUKEE AX blades for pruning and clean wood cutting offer a 3 TPI design, which allows for the fastest cutting in clean wood, and a low profile blade geometry designed for root removals. The optimized carbide teeth withstand abrasives like rock, sand, and dirt as users remove roots for trenches or stumps for tree removals. Milwaukee carbide teeth products allow you to cut longer, cut more, and cut faster than other carbide-teeth blades on the market.