808693 American Saw & Mfg Co 20757CT450J 2 Pack, 4, Hi-Carbon Steel, 10TPI, U-Shank, Jigsaw Blade, Greater Precision, Super Sharp To Cut Fast Without Deflection, Smoother Finish, Ground To Precision, Sharpness For Straighter Cuts A Smoother Finish, Ideal For Woodworking, Designed For Optimal Performance In Wood Cutting, Including Hardwoods.