The GO! Signature Block is designed to work with the GO! Half Square-3" Finished Triangle (55009) and GO! Half Square-1" Finished Triangle (55320). Sew two 3" finished half square triangles to the long sides of the block for a 4 1/2" finished square or four 1" finished half square triangles sewn to the short sides of the block form a 6 7/16" x 2 1/8" rectangle. Use this shape to incorporate signatures to personalize a quilt or prepare signature blocks to be signed at showers, weddings and other celebrations.