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. [5000‑18000r/min] The no load speed is 5000‑18000r/min, the voltage is 3.6V, and the charging time is 3‑5h, to meet your various need. Specification: Item Type: Chainsaw Sharpener Material: ABS, steel After Installation Product Length: Approx. 25cm / 9.8in Chuck Capacity: 3.2mm Battery: Li-ion battery 2000MAH (Battery Included) No Load Speed: 5000-18000r/min Charging Time: 3-5h Voltage: 3.6V Weight: Approx. 405g / 14.3oz. Package List: 1 x Chainsaw Sharpener (Battery Included) 1 x Mounting Head1 x Connecting Line15 x Accessories