Product Description The LENOX Gold Reciprocating Saw Blades have a reinforced tooth design and a precision-applied titanium coating that dissipates heat quickly. Each saw blade has T2 technology for extended life and an optimized tooth geometry. A durable, bi-metal design stands up to the most demanding applications. -- 7500 From the Manufacturer LENOX Gold 624G - 6" 24TPI Titanium Edge Metal Cutting Reciprocating Blade - 5 Pack has specially formulated Titanium edge which improves the wear resistance of the teeth for faster cuts through the blade's life. The bi-metal technology flexes, resists breaking and also extends the life of the blade. The reinforced tooth design and Titanium coating combine to create the longest lasting blade, ever.