The Einhell cordless GE-CS 18 Li - Chainsaw Sharpener restores the cutting edge to your chainsaw and saves you money. Why buy an expensive new chain when you can re-sharpen the one you already have? The chainsaw sharpener is ideal for quickly sharpening standard chains without excessive abrasion. A depth stop protects the chain from excessive material removal. The angle gauge and chain tensioner ensure the chain is ideally positioned for precision grinding. You don't have to be an expert to get quick results. The sharpener is supplied without a battery and charger which are available separately.