Precision chassis weights A complete set of 2 chassis balancing weights and mounting hardware. Designed for XRAY T1 to be mount at the pre-drilled holes at the front of the chassis but fits any other race car as well. Made from brass. How to use balancing weights: For precision balancing, use the simple balancing tool from HUDY (#107880). Place the chassis on the two holes drilled along the centerline of the chassis. If the chassis falls to one side, it is not balanced, and weight needs to be added to the other side. Use one of the following balancing weights to balance the chassis so that both sides have the same weight, and chassis stays level when placed on the chassis balancing tool. The weights should be mounted to the pre-drilled holes at the front of the chassis. 1 weight equals to 5g