Triangles On A Roll - Use this size to make 2-1/2in finished size half square triangles. The seam allowances are included in the pattern, so all you need to do is sew and cut using the pattern on the paper. Instructions are provided on the paper. Each roll makes 700 half square triangles.
This continuous grid on rolls of paper enables you to construct blocks of half square triangles efficiently, accurately, and without the need for separate sewing of bias seams. Blocks will be uniform, and precise for easy piecing. Just sew on the dotted lines, cut on the solid; it couldn't be easier.