Hey RC enthusiasts! Is your WLtoys 12428 or 12423 buggy or truck in need of a tougher drivetrain? This metal upgrade set is exactly what you're looking for. It replaces the stock plastic parts with a strong, all-metal drive shaft and differential. The parts are CNC machined for precision, which means better fit and smoother power transfer to those wheels. The shaft itself measures about 95mm long (roughly 3.74 inches). Durable metal parts like this can handle more power, jumps, and rough terrain without breaking like the plastic ones sometimes do. This is a single set, so make sure you get what you need for your build. A straightforward upgrade that adds reliability and strength to your favorite 1:12 scale rig. Perfect for keeping your ride running longer and stronger.