Original Fast Frames X-Change 7 in 1 Hoops for Brother PRS100 Persona & Baby Lock Alliance Single Needle Embroidery Machines Fast Frames are a hoopless embroidery frame. Stick-on backing is placed on the frame. The adhesive backing is exposed in the open embroidery area of the frame. Press the area to be sewn firmly down on the backing. Use the notches as points for alignment. Any area that will lay down flat in the sewing field, you can sew! Rotation of the design may be needed (for example, the back arch of a cap). Use this product for the sweat band area of caps, backs, sides, bills, bucket caps, collar tips, cuffs of sleeves, dog collars, gym bag center flaps, etc. Sport knits do not get stretched out of shape. The stick on backing holds it in place. This system is a faster, more cost-effective way of sewing hard-to-sew items. Don't worry, you won't waste a lot of backing. When you tear the item away, you just place a patch on the hole from the underside and press the next item in place to sew. Fits Brother models: Persona PRS100 Fits Baby Lock models: Alliance BNAL