Feature: This chain saw file is made of bearing steel , after elaborate Production process, it can be produced. It has sharp fangs, high hardness and has strong wear resistance. Start to fill by tightening the tension in the chain to firmly support and file cutters from inside out the cutter. It has a round shape, smooth cut and straight tang. Low noise and simple appearance. Specification: Color: as picture shows 3 sizes for choosing: 4mm/4.8mm/5.5mm Shank Diameter (Optional): Approx. 4mm / 0.15" Approx. 4.8mm / 0.19" Approx. 5.5mm / 0.21" Chainsaw File Length: Approx. 200mm / 7.87" Quantity: 3pcsPackage included: 3 x Round Chainsaw Files (files only)