EASY TO FILL: Our fat ball feeder has a round lid that opens for you to refill the fat balls, with a small ring at the opening that holds the lid securely in place to prevent it from being opened by birds. Durable material: Made of high-quality metal, not easily crushed and deformed, with tight seams, it can be hung outdoors for a long time without worrying about rust. It's more than just a fat ball feeder that attracts birds, it's a gorgeous addition to your garden. Suitable Capacity: You will get 4 black fat ball bird holes with 4 S-shaped hooks, 7cm in diameter; S-shaped hooks with chain: 12.5cm, suitable for feeding multiple birds at the same time. Fits one fat ball: only fits one fat ball or suet ball or half a loaf. This prevents bird food from deteriorating and becoming moldy due to long-term storage outdoors, and also facilitates the dispersion of hanging feeders to attract more birds, such as woodpeckers, sparrows, robins, etc. WIDE APPLICATION: These fat ball feeders are ideal for supporting outdoor game birds during spring, summer, fall, winter foraging. All animals, whether squirrels, blackbirds, thrushes, crows, sparrows, jays, woodpeckers or red-capped finches, will be helped. The feed screw allows for quick pecks.