Ready to upgrade your little RC crawler? This RCAWD full-metal differential assembly is built tough for 1/18 and 1/24 scale rigs like the SCX24, FMS FCX18, FCX24, and similar models. The whole thing is CNC machined from aluminum alloy, making it way stronger and more durable than the stock plastic parts—perfect for handling more power or rougher terrain. It comes as a complete set with the differential and the drive gear, plus a gasket for a proper seal. It's a direct replacement for part number C3166. The red anodized finish looks awesome too! This upgrade will help your truck put power down more effectively, reduce breakage, and just generally handle better. If you're into modding your micro crawler, this metal diff is a very popular and worthwhile upgrade. Just make sure your model is compatible before you buy!