This is the ez Quilting Tri Recs Triangle Rulers set. The package includes two acrylic tools and instruction booklet. Cuts many sizes of triangles and divided rectangles from even size strips of fabric. Ruler sizes are 3 1/2in x 8in and 3 3/4in x+J3 6 1/2in. This is the easy way to make triangles within squares and divided rectangles. The cut-off magic angle makes it easy to align and sew accurat+J11ely.