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). Accomodates cording up to 3/16″ in diameter. Trims seam allowances to 1/4″ or 1/2″. Designed for right- or left-handed use. Complete instructions for making perfect piping and using the tool included. Grande!