Groovin' Piping Tool helps trim a small piping's seam allowance with an accurate 1/4in or 1/2in seam allowance very quickly. The tool is 11.5in in length and is designed to work with 28, 45 or 60mm rotary cutters. Detailed 16 page booklet teaches quilters to make and apply perfect pipping. The Groovin' Piping Trimming Tool is used to trim piping seam allowances to consistent width. When piping is sewn, it is impossible to maintain a consistent seam allowance. Trimming seam allowances using a traditional acrylic ruler is a time consuming chore but the Grovin' Piping Trimming Tool makes this task quick and accurate. (Rotary cutting equipment is needed to use this tool.)