The Durkee all metal single needle cap frame 5? x 7? is only compatible with the Husqvarna Viking 5 x 7? hoop #920085096 (Hoop not included) The bill of the cap is clamped securely in place while you press down the front portion of the cap held in place with sticky backing stabilizer. The Durkee Single Needle Cap Frame Insert allows you to stitch a design or logo approximately 4 1/2" wide and 4 1/2" tall. The frame also provides both vertical and horizontal alignment guides and slots for consistent embroidery placement.