The package includes 4 aluminum vinyl record adapters designed to allow big hole records to be played smoothly with high-quality sound. The adapters minimize eccentricity and improve stability for 7-inch vinyl records, reducing pitch swing and ensuring a smooth playback experience. Made of premium materials, these adapters are durable and easy to use, with a lightweight and compact design for portability. They are designed to fit perfectly on turntable spindles, ensuring no wobble or play during use. Overall, these adapters are a professional and affordable solution for vinyl record enthusiasts looking to improve their playback experience.