The EZ Cap Frame attaches directly to any Durkee Blue Adaptor Arm for any Multi Needle machine. Whether you want to embroider the front of the cap (with a generous 5" x 4" stitching area for most caps) or, the back of the cap, it’s easy with the EZ Cap Frame. And because you are stitching flat (like a left chest embroidery design), no special digitizing is required! Plus, with your additional EZ Frames you can also stitch on the side(s) of the cap.