Aluminum Alloy Cups and Balls Matching Solid Cup by TCC MagicIntroducing Matching Solid Cup for the TCC Aluminum Alloy Cups This solid cup looks and feels like the TCC Aluminum Alloy Cups, with the bottom filled. You can use it as a surprise ending to your Cups and Balls routine or one cup routine. The key difference between this solid cup and the normal solid cup lies in its bottom design: it stands 8mm higher than the cup mouth. This design prevents the cup from falling due to unstable placement when stacking