GO! Half Square Triangle - 4" Finished Square (#55031)Triangles are one of the basic foundations of quilting. Using the GO! Half Square 4" Finished Triangle die to cut them makes your job a whole lot easier (and quicker). Two half square triangles cut with this die and sewn together form a 4" finished square. Product Details AQ Cutting Mat Required: GO! Cutting Mat, 6 in. x 12 in. (15. 2 cm x 30. 4 cm) How to Die Cut 4" Finished Half Square Triangles: For best cutting results, position fabric on the