The Omnigrid 6-1/2 x 24 folding ruler (R6524) features an extra 1/2 width for seam allowances and is used for cutting strips and trimming fabric edges during quilt making or when executing a variety of sewing and fabric craft projects. This ruler is used to cut 6 borders with seam allowances and to cut 6-1/2 strips for 6-1/2 blocks. It can also be used to cut strips borders and bias pieces.