Upgrade your RC crawler's performance with this premium stainless steel internal spline drive shaft set from AINIUNIU. This universal joint driveshaft, designed for RC enthusiasts, features robust steel construction for enhanced durability and reliable power transmission. The set includes 2 drive shafts compatible with SCX10 models and various scales (1/14, 1/16, 1/12). Perfect for outdoor use, this manual-operation component requires minimal assembly time of just 12 minutes. The drive shaft set is specifically engineered for ages 14 and up, making it an ideal choice for serious RC hobbyists looking to enhance their vehicle's drivetrain capabilities. Each component is precisely manufactured to ensure smooth operation and optimal performance in challenging terrain conditions. The universal joint design provides improved articulation and flexibility, essential for tackling diverse obstacles in RC crawling adventures.