Cap/Hat Insert for the Pfaff And Husqvarna Viking Machines This cap insert makes it very easy to embroider on caps and Hats This will work with the following Embroidery Frames/Hoops (needed) Husqvarna Viking Do All Quilters Hoop 150x150mm - 6"x6" (920115096) Pfaff/Viking Creative All Fabric Hoop II 150x150mm - 6"x6" (820889096)You need one of the above hoops to use this cap insert Fit for Pfaff sewing machine models: Creative 1.5, Creative 2.0, Creative 3.0, Creative 4.0, Creative 4.5, Creative Performance, Creative Sensation, Creative Sensation Pro, Creative Vision, Creative Vision 5.0 Fits Husqvarna Viking Hiclass 600E, Platinum Plus, Designer Diamond / Ruby, Designer I USB, Diamond, Quilt Designer II, Designer I/II/SE, Topaz 20/25/30, Ruby Deluxe, Diamond Deluxe, Platinum 950E/955E, Designer SE Limited Edition