3. [Simple To Use] The chainsaw sharpener kit is exquisite in workmanship, and the charging time is 4‑5 hours, working time is 40‑60 minutes, easy to use. 1. [Universal] The lithium battery chainsaw sharpening kit is suitable for most chainsaw blades, which can easily maintain your oil chain. 2. [Stable Performance] Cordless chainsaw sharpener with professional manufacturing, craftsmanship and high accuracy help deliver stable performance. [Widely Application] The cordless chainsaw sharpener speed is 5000‑18000 rpm/min, which is widely used in many situations, such as outdoor, garden, household, etc, Weight: 0.94027154743 pounds, Manufacturer: Butyge