Size 18mm: Fit for cut the fabric 36mm widths; size 25mm: Fit for cut the fabric 46mm widths. Bias tape makers of 5 size :1/4" 3/8" 1/2" 3/4" 1" ( 6mm 9mm 12mm 18mm 25mm). Pull the fabric through and iron fold it perfectly, ready for sewing on or gluing. Make any fabric into accent, border or trim. Size 6mm: Fit for cut the fabric 12mm widths; size 9mm: Fit for cut the fabric 18mm widths; size 12mm: Fit for cut the fabric 24mm widths.