There is a visual I.D. of every part in the manual, and some of the larger pieces have measurements associated with them. Each part is not labeled individually since stickers would increase manufacturing costs, which would raise the sales price. We do have several assembly help options available if you run into questions, including; YouTube video tutorials, the BILT app, and also our customer service department is always a great resource. They can be reached at 800-225-3865 or by email at customercare@lifetime.com. Customer service hours are Monday-Friday, 7:00 am to 5:00 pm.