1. Material: hardened steel structure, reduce the failure rate, smooth transmission when working.

2. Universal joint type, stronger load capacity, larger drive angle, V2 version added D-Face and H-Face, less shaking. At the same time, brass movable beads are added, and the clearance is smaller.

3. spline type engagement, high transmission torque and small deformation.

4. Replace the original plastic parts of 1/18 TRX4M RC tracked vehicle.