Description Product Features:1. The ultra-fine 1.5mm millstone is used for breeding miniature birds, aquatic animals, etc., such as: (indigo chin, white eye and other birds breeding)2. The 2.0 mm millstone is for breeding: parrots, thrushes, finches and other pet birds.3. The 2.5 mm millstone is used for breeding: young rabbits, young chickens, young ducks, young geese, young pigeons, young birds, young peacocks, young aquatic fish and other small animals.4. The 3-4 mm grinding disc is for breeding: rabbits, chickens, ducks, geese, pigeons, birds, peacocks, aquatic fish, etc. (3-4 mm specifications are 3.0mm, 3.5mm, 4.0mm for your choice)5. 5-6mm millstones are breeding: pigs, cattle, sheep, dogs, pigs, horses (5-6mm sizes are 5.0mm, 6.0mm for your choice)6. 7-12mm is generally used to make bait, large birds, mice and other large animals, and it takes a few days to customize (7-12mm specifications are 7.0mm, 8.0mm, 9.0mm, 10mm, 12mm for your choice)7. If you have any special requirements, please note the diameter requirements of the particle machine grinding disc, and we will install, debug and ship according to your requirements.8. The size of the aperture size of the grinding disc of the feed pellet machine is a kind of grinding disc according to the customer's requirements.