WRIGHTS-Tri-Recs Tools are thick and sturdy, so they will stand up to years of wear. This 2 piece set makes it easy to make triangles within squares and divided rectangles. Also includes an instruction booklet. Includes one 6 x 6.75 x 6.75 triangle with 1/4 seam allowance built in and one 6.5 x 3 x 6 rectangle with 1/4 seam allowance built in.