The product includes :Battery Holder-3PCSStainless steel flat head screws 3*8-4PCSStainless steel flat head screws 3*10-2PCSOriginal title / role No:AXI231008Major advantages of upgrading to the part/product :1. Made with a good lightweight high tensile strength aluminum 6061 T6 for greater support and durability.2. Outstanding product for heat cooling. The pattern can also help cooling down the warmth from battery.