Professional roulette balls (or pills) are made of white or ivory delrin material and are accurate to within .0001 inch. Never use metal or glass balls on a roulette wheel, since they will scratch the finish of your wheel. We stock a variety of sizes to fit any roulette wheel.
Ball Size / Roulette Wheel Size
7/16 in. (Up to 16 in. wheels)
1/2 in. (18 in. - 20 in. wheels)
5/8 in. (20 in. - 25 in. wheels)
3/4 in. (27 in. - 32 in. wheels)