Team Losi 45T Spur Gear Plastic: 8E 2.0 Plastic spur gears enhance the sound of gear mesh making the car quieter Spur gears are made of highly durable plastic that has been specifically designed for the rigors of 1/8-scale electric buggy and truggy racing Spur gears include a steel insert for improved overall strength and longevity Included steel insert stays on the center differential when the spur gear is removed, allowing you to change your spur gear quickly and easily