4mm/4.8mm/5.5mm Chainsaw Chain Saw Sharpening Sharpener Sharpen Teeth Round File

1PC 4mm 4.8 mm 5.5mm Round High Carbon Steel Sharpening Chainsaw Saw Chain Files Sharpener for Woodwork Chainsaw File. 1 × Chainsaw File. 4.0mm: for electric chain saw (small 3/8" chain). 4.8mm: for small chain saw (325, big 3/8" chain).