The Trim-it rulers by Lori Holt of Bee in my Bonnet are non-slip and easy to use to trim your blocks after splitting, applique or embroidery. Use the diagonal lines to easily center your block when trimming, and use the colored outer 1/4" seam allowance markings to help you see what will show of your block after sewing into your quilt. The ruler has aqua and denim markings in 1" grids in 1/8" and 1/4" increments. This package contains one 12.5x12.5 inch ruler. Imported.