Diablo's fleam ground reciprocating saw blades provide exceptional cutting performance in extreme pruning applications. This blade includes high performance features for super fast in wood materials. This blade is not recommended for cutting wood with nails. Reciprocating blade12 in. length5 teeth per inchA one-of-a-kind tip design enables faster and easier plungingHardened cutting edge for long and durable cutting lifeIdeal for pruning wood, including pressure-treated woodNot recommended for cutting wood with nailsBi-directional tooth design allows for fast and smooth cutting in both directions