Use with a rotary cutter and mat to trim a BIG piping's seam allowance for handbags, pillows and home dec like original Groovin' Piping Trimming Tool but with wider, deeper grooves. Accommodates cording up to 3/16" in diameter. Trims seam allowances to 14" or 12". Designed for right or left-handed use. Complete instructions for making perfect piping and using the tool included.