Precise Separation , No Mixed Feeding ：The dual bucket design with clear printed labels keeps grit and oyster shells separate . This avoids accidental ingestion and mixing by chickens , ensures accurate supply of each nutrient , and supports fine chicken flocks​ Quality ABS Build ：The chicken oyster shell feeder and grit feeder are made of premium ABS . They stand up to pecking and dropping , stay intact when chickens peck , and hold up well during moving and installation , remaining in well shape after long term use​ Auto Refilling , Less Effort ：The tower type storage with auto dropping design lets feed refill the base on its own . No need for frequent refilling , saving time and energy . Even when you're away temporarily , chickens can feed themselves easily​ Scientific Feeding , Boost Health ：The two feeders are marked "Grit" and "Oyster" respectively , clearly distinguishing grit and oyster shells . They meet different nutritional needs of chickens , aid digestion , strengthen eggshells , and keep chickens energetic Flexible Installation , Versatile Use ：The package includes screws and cable ties for installation . It can be nailed to walls , woodiness boards , or tied to fences , fitting easily in coops or outdoor range areas . It adapts to various breeding scenes for efficient small space use​