This is the Scale Accessory Assortment #6 for Scale Crawlers. Extreme 4x4's call for Extreme Power and our Assortment #6 delivers. You get two simulated Dry Cell batteries with hardware that allows you to configure either a dual or single battery system. Backing that up, is a highly detailed replica of a 3000K Power inverter. With Pro-Lines Scale Accessories Assortment #6 your Scale rig will never be in short supply of electrical power.