Includes: 1 Machine Set (3 zipper halves that go on the canvas roller bars), 1 Quilt Set (3 zipper halves that attach to 1 quilt) and the detailed Quick Zip System manual with digital color photos showing you step by step how to install and use the system. The Quick Zip System Machine Set is the first set you will need to set up your quilting frame with the zipper system. Order the length of machine set that is closest to your canvas length. The zippers are centered on your canvas. If your canvas is not the same size as the zippers, the extra will extend equally on each end. If your canvas is not within approximately 6" of the zipper length, you may need to order a Customized Machine Set. If you are unsure, please feel free to contact us. We would be glad to help!