This 3-in-1 Combine Universal Pill Making Machine, will deliver three functions in one Herbs Pills Making Machine: Pill Making * Pill Shaping and Polishing * Pill Dry-Up. Herbal Pill Making Machine Sold with Roller standard size 4mm. diameter. So Herb Pills 4mm. diameter can be produced ( ball-shaped). To manufacture (ball-shaped) Herbal Pills with diameters: 3mm, 5mm, 6mm, 7mm rollers can be purchased separately, upon special request ( 300usd each Roller)