This 8" long Skinny heating element is the perfect length to print 20oz skinny tumblers. This can only be used within the TransPro Mug Heat Press and TransPro 3-in-1 Mug Heat Press, as it is not a universal heating element for other mug press brands. Please note: If printing a design that wraps completely around a skinny tumbler, you will need to rotate the tumbler a quarter turn when printing to ensure the design is printed fully.