Features: Perfect RC crawler accessories for 1/18 RC Crawler TRX-4M Defender upgraded part, replace the plastic part. Brass material for more durable and improves the overall performance .Aside from the great looks-,they will not flex- as much as plastic under stress or during high ambient temperatures. The black hard coating with gold edges adds bright nice appearance to your car and prevent oxidation and corrosion. Adds extra-weight to the lowest part of your TRX4M, for improved anti-rollover stability and superior rock-climbing capability. CNC-machined for precision-.Increased strength and precision-. Specifications: Material: Brass For 1/18 RC Crawler Car Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set RC Steering Knuckle