The designs are set up for a 4" x 4", so the designs can fit on only certain machines. These designs can be embroidered on any machine that has a 4" x 4" hoop or larger. The designs are written in .art, .cnd, .csd, .dst, .exp, .hus, .jef, .ofm, .pcs, .pes, .sew, .vip, and .xxx on a CD.