(A)Small hoop size: about 6 2cm/2.36 0.79" (embroidery). (C)Large hoop size: about.18 13cm/7.09 5.12" (embroidery). (D)Maximum hoop size: about 30 13cm/11.81 5.12" (embroidery). A variety of fabrics can be fixed by the adjusting screws on each circle.