Perfect Chain SharpenerThis Chain Sharpener Kit Contains 10 Commonly Used Sharpening Tools To Sharpen Your Chainsaw Chain Blades For Optimum Cutting Performance In Minutes To Save Energy And Time.High Quality- 5/32 (4.0Mm), 3/16 (4.8Mm), 7/32 (5.5Mm) Round Files Designed With Durable Steel And Can Be Used On A Wide Variety Of String And Pitch Types; Interchangeable Handle Works With All Files.Efficient And Stable - File Guide Designed With Effective Quick Lock/Release Mechanism For Stability And Control; Etched Angle Markings Help Ensure Precise Alignment When Filing.Scientific Design- The End Of The Whetstone With Handle Design, Easy To Use, Which Allows The User To 'Operate Directly On The Chainsaw, Without Accidentally Hurting Your Finger.Tool Set Includes:- 3 Round Files, File Holder, 6 Inch Flat File, Depth Gauge, Cleaner Bar Groove, Quick Check Gauge, Hardwood Handle And Pouch (Orange); Detailed, Clear And Easy To Follow Instructions.