Sharpen your chainsaw with the CountyLine Replacement Round Chainsaw Chain Files. These chainsaw files come in a pack of 2 and are designed to work with all chains requiring 5/32 in. (4 mm) files. Precision engineered from durable steel, these files deliver smooth and efficient sharpening. Instructions for sharpening are included on the product label for safe use. Remember; a sharp chain is a safe chain; check chain frequently and sharpen as needed.