The inside dimension of this hoop is 7 5/8″x12 3/4″ (7.66×12.81″, 194x325mm)
Actual sewing area depends on brand of machine approximately 6.87 x 12.02″ or 174 x 305mm
Mighty Hoop has a diverse selection of sizes and matches perfectly with Smartstitch embroidery machines.
Youtube video on adding custom frames to the S-1201:
Youtube video on adding custom frames to the S-1501:
Youtube video on separate and keep your Mighty Hoop: