Companion angle covers all the bases. Thick and sturdy so that they will stand up to years of wear. Cut trapezoids of many sizes cut Triangles 1 to 10 and cut half block Triangles for small blocks set on point. Built in 1/4 seam allowance. Ideal for use with a rotary cutter. The companion angle measures approximately: 11-1/4 by 7-3/4 by 7-3/4-inch.