Chain saw files produced by our company is made from special rolled steel in order to meet the high quality standard of foresters. Its spire tines, well-distributed and accurate make it succeed in filing sharpest. Advantages: First, it has strong filing capacities and the time to grind it is shorter. Second, its long lifespan reduces the quantity for file needed. Third, its normal grinding work can be finished only to slightly file twice or three times which protects its saws and lifespan.