The BULGIN COMPONENTS part BX0027 is a durable Battery Holder designed for holding 4-Cell AA Size batteries. Made of high-quality Glass/Nylon material, this battery holder provides excellent strength and reliability. With a convenient screw fastening mechanism, it securely holds the batteries in place, ensuring a sturdy connection. This Battery Holder is perfect for a wide range of applications, from electronics to portable devices, offering a reliable power solution.