Oregon Chainsaw Sharpening Kit. Suitable for Oregon Saw Chain Type 26, 27 & 58, 59AC. A basic kit for hand maintenance of chain & bar. This Oregon kit contains 1x file holder & guide for top plate maintenance, 1x flat file with wooden handle, 1x depth gauge tool & 1x bar groove cleaner to clean guide bars & oil holes. File Diameter: 5.5mm / 7 / 32"