GO! Tumbler - 3 1/2" (3" Finished) (#55015)We've given the traditional tumbler shape an upgrade with specially designed corners that make piecing a breeze. Ideal for scrappy quilts, the GO! Tumbler die cuts these pieces perfectly, every time and even goes through multiple fabric layers like a hot knife through butter. 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 Tumbler Shapes: For best cutting results, position fabric on the