The Lenox Tools 20759CT320JC U-Shank High Carbon Steel Fine Scrolling Jig Saw Blade 3-5/8-Inch x 3/16-Inch x 20 TPI - 2 Pack is designed for scroll cutting and cutting through laminates. The 20 TPI allow for a smooth, fine finish. The carbon steel construction allows the blades to be super sharp for precision cutting. The teeth are ground to precision sharpness for straight cuts. These blades are made with a Universal Shank that fits most Jig Saws.