Old motor went bad. Bought a new one. Chain was in the box. Never used.

The LiftMaster/Chamberlain/Craftsman Garage Door 7ft Chain & Cable Kit 002D1817-10 is a high-quality replacement part for garage door openers. This kit includes a 7-foot chain made of durable metal, designed to be compatible with LiftMaster and Chamberlain brand garage doors. With the model number 002D1817-10, this chain and cable kit is essential for ensuring smooth and reliable operation of your garage door. Perfect for home improvement and maintenance projects, this kit provides the necessary components to keep your garage door functioning properly.