This product includes :Battery Holder-3PCSStainless steel flat mind screws 3*8-4PCSStainless steel flat mind screws 3*10-2PCSOriginal title / role No:AXI231008Major features of upgrading for this part/product :1. Made with a quality lightweight high tensile strength aluminum 6061 T6 for greater support and durability.2. A great material for temperature cooling. The pattern will help cooling down the warmth from the battery.