SUNCHERS provide a variety of power tools to help you complete your cleaning tasks easily and efficiently. We now have leaf blowers, string trimmers and we will keep launching new products. We are dedicated to meeting the different cleaning needs of courtyards, gardens, indoors and outdoors. While providing quality products and after-sales service, we will continue to innovate and improve the performance of our tools. What's inside the package? Two Batteries, Battery Charger, Mini Chainsaw, Two chains (one pre-installed), One carrying case, One pair of gloves, One pair of goggles, One cleaning brush, One user manual. Please note that there is NO lubricant in the package How to replace the chain? Please remove the guide bar and chain, and install the new chain while making sure the drive links are correct. If you have any operation-related questions, please feel free to chat with us How can I get more chains or other replacement parts? To obtain the accurate accessories, please search "SUNCHERS chainsaw chain" or chat with us for more replacement parts