The Yokomo Shorty Size Battery Chassis Weight is a chassis tuning option that mounts under the battery to improve the overall balance and reduce the center of gravity. The size is the same as a "shorty" style LiPo battery used in off-road cars, drift cars, and 1/12 racing. Thanks to the flat profile, it is easily installed under a battery, and is a great tuning option for a variety of applications. It is made of 1 mm thick steel and weighs about 34 g. The Yokomo factory logo is engraved on a matte black finish to finish off the look.