Power through challenging workloads using the high-speed 25 PK 8 in. 18 TPI METALWOLF™ .035 in. Thick WAVE EDGE™ Bi-Metal Reciprocating Saw Blade. Its hardy, high-durability blade structure delivers up to 50% longer life* for long-lasting cut performance with medium-thick metals. Get the most out of your power tool with the blade’s fortified spring steel backing which assists in reducing breakage over time.