Product Info Catalog Tools Abrasive Tools Planes, Files, Rasps & Chisels High-Carbon Steel Round Chainsaw File, 8-In. High-Carbon Steel Round Chainsaw File, 8-In. Request a Quote UPC: 37103019745 SKU: 390036 Model Number: 01974 Nicholson, 8" x 1/4", High Carbon Steel Round Chain Saw File.