Cut faster, last longer, and take on the toughest materials with the Spyder Black Series Reciprocating Saw Blade. Featuring 8% cobalt bi-metal construction, these blades deliver up to 10x more cuts and cut 3x faster than conventional bi-metal blades. Built to resist heat and shattering, the Black Series powers through metal, wood with nails, and other demanding materials with relentless efficiency and durability.