Wing Clipper II - Quilting Tool for Trimming Down Flying Geese Units You will receive (1) Wing Clipper II Ruler size - 5  x 10 Unit size - 9 options from  x 1  finished size units to 4  x 9  finished size units All sizes on this ruler are based on heights that finish to  or  &amp; heights increase in half inch increments Step by step illustrated instructions, with instructions and illustrations for left hand trimming