The Brother Dual Feed Quilting Guide is designed to help you stitch straighter lines with precision, and it works specifically with the MuVit Dual Feed Foot device (SKU #SA196), which is sold separately and included with the XV8550D, XV8500D, VM6200D, VQ3000, and VQ2400 machines. This guide includes both a Right Guide and a Left Guide, each adjustable up to 2 3/8″ from the center needle position. It also comes with a quilting guide base and screw, making it easier to create consistent and accurate quilting lines.