The Tri-Recs Tools package includes two acrylic tools. The Tri Tool is the easy way to make triangles within squares and divided rectangles – the cut-off “magic angle” makes it easy to align and sew accurately. Use the Recs Tool to cut many sizes of triangles and divided rectangles from even-sized strips of fabric. Both tools have a built-in 1/4″ seam allowance, ideal for use with rotary cutter and are ompatible with the Easy Angle and Companion Angle tools (each sold separately). Instruction booklet included.