Lenox blades cut through tough materials including nail-embedded wood and retain tough sharpness longer than its competition. Features include: bi-metal construction, 8% cobalt edge, precision-milled teeth which in return make them shatterproof, high wear resistant with a more aggressive cut. For nail embedded wood, composition materials and plastics. Pipe, carbon steel and stainless steel 1/8"-1/4", nonferrous metal 1/8"-1/2" thick.