Pinwheels, squares and hourglass shapes: quarter square triangles build them all. Add versatility to your quilting die collection with the GO! Quarter Square Triangle-4 1/2" Finished Square die. When sewn together, four quarter square triangles (QST) finish to one 4 1/2" square. Cutting precise lines and crisp corners by hand or even with a rotary cutter is difficult and takes time. That's why this die is compatible with AccuQuilt's GO! Baby, GO! and GO! Big Fabric Cutters. With this die and your cutter, you can slice neatly through several layers of fabric at once and do the job 90% faster than cutting with a rotary blade. Perfect for quilters of all skill levels, this die includes specially designed corners that eliminate dog ears and 1/4" seam allowances, too. You can purchase it separately here and also find it in the GO! Qube Mix & Match 9" Block.