Cuts 20% faster on average than comparable professional saws! Patent-pending tooth pattern helps keep the cut channel free of sawdust, resulting in a faster cut Replaceable 13 inch blade (7900-1) made with the same SK4 high-carbon steel used in advanced knives and precision cutting tools Blade's steel extends through the entire handle, helping you make the most powerful cuts Hook helps keep blade in the cutting channel, minimizing time lost reinserting Lightly textured elastomer grip helps reduce hand fatigue so you can cut longer