This electric chainsaw from DURHAND is ideal for logging, pruning, preparing firewood, and other general DIY maintenance tasks. The 40.5cm chain saw produces a chain speed of 13m/s, and a high-quality 50 steel chain ensures optimum cutting performance. The chainsaw, equipped with an electric/mechanical chain-breaking device, is designed to reduce the possibility of injury by stopping a moving saw chain in milliseconds. For added safety, the chainsaw features a double brake system. The handguard protects your hand from accidental slippage and touching the chain during use. The integrated auto oil system can lubricate the chain, giving higher cutting efficiency. The automatic oiler distributes oil on the bar and chain while the saw keeps your chainsaw lubricated and prevents premature wear. The amount of remaining oil in the fuel tank can be clearly seen through the external scale, which is convenient for the timely replenishment of oil.