The Snap-Hoop for heavy duty projects that need a monster grip. 4 X stronger than the original Snap-Hoop. Comes with a flat magnetic top and metal bottom frame. The bottom frame includes a machine attachment that is recognized by the embroidery machine. Simply lay the stabilizer and fabric over the bottom frame and snap the top frame in place. Includes one metal base frame with machine attachment, one magnetic top frame, one magnet safety shield, four 14in adhesive centering rulers, and target stickers. These are machine specific.