The Extra Blade for the Ryoba 9-1/2" Double Edge RazorSaw #155692 for Hardwoods has a blade length of 9-1/2" and when attached to the handle an overall length of 23"; Cross-cut: 22 tpi and Rip: 9 tpi. These Ryoba saws are designed for cutting hard or abrasive woods such as maple, oak, teak and exotic hardwoods. The blade is thinner (.018") and has a greater number of teeth per inch than comparable saws of its size and type. This insures an exceedingly smooth, accurate cut. The teeth are impulse hardened for extended wear. Blades can be interchanged and a brochure detailing use is included with each saw.