Lee's Mealworm Plastic Dish contain curved walls keep small to medium sized mealworms contained. Smooth interior surfaces and inward-curved walls make it extremely difficult for mealworms to escape from this dish. Dish dimensions: 3-1/4" diameter x 7/8" tall Curved walls keep small to medium sized Mealworms, Waxworms and Superworms contained Also for veggies, pelleted food & water dish