Feature:1. [Multipurpose] The lithium battery chainsaw sharpening kit is suitable for most chainsaw blades and can easily maintain your oil chain.2. [Stable Performance] The chainsaw sharpening kit is fine in workmanship, stable in performance and easy to use, so you can use it with confidence.3. [USB Charging] The chain saw sharpen tool set is compact and portable, and can be charged with USB, so you can take it anywhere.4. [Durable Material] Made of high quality ABS and steel material, which is durable, high hardness, safe and can be used for a long time.5. [500018000r/min] The no load speed is 500018000r/min, the voltage is 3.6V, and the charging time is 35h, to meet your various need.Specification:Item Type: Chainsaw SharpenerMaterial: ABS, steelAfter Installation Product Length: Approx. 25cm / 9.8inChuck Capacity: 3.2mmBattery: Li-ion battery 2000MAH (Battery Included)No Load Speed: 5000-18000r/minCharging Time: 3-5hVoltage: 3.6VWeight: Approx. 405g / 14.3oz.Package List:1 x Chainsaw Sharpener (Battery Included)1 x Mounting Head1 x Connecting Line15 x Accessories