Description: 3Pcs 4mm 3\/8 inch Round Sharpening Chainsaw Saw Chain Files Sharpener For Woodwork Specifications: Material: High Carbon Steel Shank Diameter: Approx. 4.0mm\/ 0.16!#!amp!*!quot; Total Length: Approx. 245mm\/ 9.65!#!amp!*!quot; Quantity: 3pcs Features: 4mm round file suitable for 3\/8!#!amp!*!quot; chains High carbon steel round chain saw file It has a round shape， smooth cut and straight tang Start filing by tightening the tension on chain to firmly support cutters and file from inside to outside of cutter Package Included: 3 x Round Chainsaw Saw Chain Files More Details: