What is the difference between MN MODEL MN90 metal steering shaft and plastic?

MN MODEL MN90 RC CAR metal steering shaft material: usually made of high-strength alloy steel or other metal materials.
Durability: Metal steering shafts have high strength and hardness, and can withstand large loads and impacts, so they have excellent durability. Metal steering shafts can still maintain stable performance under long-term use or harsh environments.

MN MODEL MN90 RC CAR plastic steering shaft material: usually made of plastic or other non-metallic materials.
Durability: Plastic steering shafts have relatively low durability and are susceptible to wear and damage. When used for a long time or subjected to heavy loads, the plastic steering shaft may deform, break, or have other problems.