【Steel Gear】Suit for 2WD Spur Gear made of heavy-duty hardened steel, long time life span (NOTE: Please use the provided screws to lock the gears to avoid damage to the gears!)
【Work Smoothly】Good machining made less rough and less noise than other pinions that make them roll smoothly.
【Free Style】The speed depends on your gear ratio. We provide two different teeth pinion gears to make you more choice in gear ratio.