STEEL CHAINSAW WIRES BEARINGS: This cutting file is made of bearing steel, after a laborious production process, which features high hardness and durability, wear-resistant use, long life. FILES DE HIGH HARDENED CHANE: These round chainsaw files have sharp fangs, high hardness and high wear resistance. Designed to sharpen all chain saw teeth, a great accessory for you.SUSTAINABLE CHANE SAW SHARPENER: Begin filling by tightening the chain tension to firmly support and file the knives from the inside to the outside of the knife. Quickly and easily remove foamed and barbed metal with the precise file design to prevent clogging. ROUND CHANE WIRE DISPENSER: These round affter chainsaw files have a round shape, smooth cut and straight tang. Maintains the good shape of the tooth and leaves an excellent edge.