This set contains 7 shapes with seam allowances-square with 6 diagonal, sits on point in 4 3 squares, 3x1-1/2 rectangle, isosceles triangle that fits in a 3 square, a trapezoid that fits in a 3 square, a right triangle with 1-1/2 and 3 legs, kite shape with 1-1/2 legs, and a 1 wide trapezoid for Attic Windows. Also includes 6 free patchwork designs for 12 blocks. Perfect shapes and sizes-laser cut accuracy-specific size pieces. Perfect corners-not just blunt, but revolutionary double blunt corners engineered for perfect alignment, perfect for rotary cutters-cut multiple layers at one time, perfect for hand or machine piercers, and perfect 1/4 seam allowances are already added.