Accessories:CVD-2pcsOriginal Name / Part No:AXI232043Part location:Front CVD areaDoes this product replace a specific part or function?yesProduct major function & usage:Leading the gears to spin and transfer the energy from the motor to achieve smooth steering performanceMajor advantages of upgrading to this product:1. Harden steel #45 plus nutrified and hardening process, more durable to use2. CVD design for larger steering angle and smooth performance.