Description: Two of the triangles cut with this die sew together to form a 3" finished half square triangle and match up with one 3 1/2" cut square. You can easily make 12" blocks with 16 sewn half square triangles. Twist and turn these basic quilting units to achieve any number of block designs including pinwheels. Add some other square and rectangle dies from our AccuQuilt GO! mix and match system and your quilting world has expanded even further. Cut 4 shapes with up to 6 layers of cotton fabric at a time.