The Lenox Tools 20334BT416JC U-Shank Scroll Cutting HCS Jig Saw Blades 3-5/8-Inch x 6-TPI 2 per Package is a thin profile jig saw blade designed for scroll cutting. The narrow profile allows you to make turns while cutting and the super sharp teeth, allow you to cut fast without deflection. The teeth are precision ground to give you better control while cutting and give the user a smooth finish. These blades are made with a Universal Shank that fits most Jig Saws.