IRWIN Japanese Double Edge Saw 7/17TPI Rip/Cross Cut. Professional Japanese saw with a very thin and flexible blade, designed for specialized carpentry, repair, and model-making work. The highly elastic blade can bend at a large angle, making it ideal for flush cutting and hard-to-reach areas. The tool is suitable for both hardwoods and soft or thin materials such as chipboard, plywood, laminate, plastic, etc. The thin and light blade with special tooth geometry ensures an absolutely clean cut and excellent finish with minimal effort. Induction-hardened teeth stay sharp longer, and the pulling action eliminates binding and promotes straight cuts. The blade has teeth on both sides. One side has 7 TPI teeth for faster, but less clean cutting. The other side has 17 TPI for slightly slower cutting, but perfectly clean and smooth. The tool has a button to detach the blade from the handle, which is a very convenient feature for both transporting the tool and replacing the blade. Blade length - 240 mm/9-1/2" Teeth per inch (TPI) - 7/17 Steel blade. Durable polymer handle. The IRWIN® Jack® range of saws are best-in-class hand saws for modern professionals. Advanced tooth technology and the ergonomic ProTouch™ handle make IRWIN hand saws the best choice for speed, ease, and quality of cutting.