Keep this extra blade on hand for situations when you don't have time for resharpening (blade with handle sold separatley #155666). RazorSaws for the Carpenter are made for post and beam and other large size carpentry. The blades are thicker for heavy work and the teeth larger for rapid cutting. They will easily handle material up to 6" x 8". If the blade is ever damaged or worn out, it can be easily replaced. This blade is 0.021" thick and has both crosscut and rip teeth. There are 9« crosscut teeth per inch and 6« rip teeth per inch. The saw has all the features of our other RazorSaw Ryoba Noko Giri. Blade will also work with #155689, #155608, #155675.