The PRH100 Frame has an embroidery area of 100 x 100mm (10 x 10 cm). It is one of the standard hoops for the PR Series and has one screw on the hoop to tighten or loosen the hoop depending on the type of fabric you are using. It is compatible with the Brother PR Series of machines. The Brother PRH100 embroidery frame will fit the Brother Multi-Needle Machines like PR & will also fit the Brother VR Single Needle Machine Frame Size: 100 x 100mm Product Code: PRH100 Fits Brother PR Machines – PR1060W, 1055X, 1050, 1000, 650, 620, PR600II, PR600, PR670E, PR680W, VR