Features: Made of Acrylic material, more durable. Easy to clean, non-toxic and harmless. Transparent designed, you can observe the food in the bowl in all directions. You can feed your pet food according to needed without disturbing their activities. This feeder only suitable for newly hatched shrimp larvae, requires fish to actively peck, prevent fish food from floating around in full tanks. Specifications: Material: Acrylic Diameter Size: Small, Middle, Large Small: 25mm/ 0.98im Middle: 30mm/ 1.18in Large: 40mm/ 1.57in Type: Small, Middle, Large Package Includes: 1pc Clear Fish Feeder note: 1-Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2-Due to the different between different monitors, the picture may not reflect the actual color of the item.