This compact size magnetic gecko feeder works great in any size tank and can hold up to 65 grams through 1/4 inch glass. The magnet is protected by waterproof glue to prevent rust, so this ledge will last. This feeding ledge has rubber bumpers to protect your glass and prevent the ledge from sliding. Saves space, saves time, and makes feeding your geckos even easier. This magnetic ledge has a natural look and feel made from virtually indestructible resin epoxy.