EZARC Reciprocating Saw Blade Heavy Metal Cutting 12-Inch 14TPI R1226PM+ (5-Pack) Extremely long lifetime for metal steel cutting due to the bi-metal cobalt teeth M42 with cobalt teeth makes the blade resist high temperaturer on heavy metal cutting Fast cutting speed by aggressive teeth geometry design and special shank angle design Precision and stable cutting performance with wider and thicker blade design 12-inch long blade can cover the cutting range of most cutting material