Bosch Wood and Metal U-Shank Jig Saw Blade Set contains a variety of fast, smooth, reverse and scroll blades comprising a handy set for tackling common wood projects and thin-metal cutting. The blades have U-shank fittings, and they are compatible with all U-shank jig saws. They are constructed with high-carbon steel deliver high performance with precise, clean cuts. The blades have flexible steel spring back to extends the blade. The steel teeth provide a sharp, long-lasting cutting edge.