ZD Racing ZRE-1 9006 1/8 Scale 4WD Brushless Electric Buggy (RTR) - New Version 3 Differentials and 4WD Straight Shaft Transmission System All Joins are Treated to a High Degree of Hardness All Plastic Parts are made of Super Tough Nylon Differential Gears are made of High Grade Steel Special Tire with Better Grip and Good Directional Ability