Premium upgrade for TRX4M Defender Bronco K10 F150 Redcat Ascent18 1/18 RC Crawlers. Made of high quality brass and aluminum alloy Heavier brass wheel weights to lower the center of gravity to increase stability and trafficability. 10mm wheel spacer to get 6mm wider distance at each side to improve the vehicle's anti-roll ability meanwhile to prevent the front wheels from hitting the steering link. ASIN B0BXY3J7P6 Size 10Mm (+6Mm) Color Extender Theme Car Brand Name MEUS RACING Model Name TRX4M Unit Count 1.0 Count Item Weight 0.01 Kilograms Manufacturer MEUS RACING Power Source No Power Source Required Material Type Brass, Aluminum Alloy Operation Mode Remote Control Item Dimensions 1 x 1 x 1 inches Number of Items 1 Toy Vehicle Form Car Is Assembly Required No Are Batteries Required No Batteries are Included No Manufacturer Part Number TRX4M-HEX-HUB Manufacturer Maximum Age MONTHS 960 Manufacturer Minimum Age MONTHS 168