The Chop Cup allows you to perform many routines where balls penetrate, appear under, or vanish from a cup. The wide model permits production of larger "climax" loads, - up to 2.5" in diameter. This Cup is approximately 3" in diameter and 2.25" at the base, and 3.25" in height. Made from seamless spun aluminum. Supplied complete with a Magnetic ball, matching non-magnetic Ball and a Chop Cup tutor.