5mm Brass Wheel Hex Hub Extenders For 1/18 TRX4M 

INJORA 7MM Brass Wheel Hex Hub Extenders 5/6/7/10MM Thickness for 1/18 RC Crawler Car TRX4M Upgrade Parts (4M-02)
Suit For: 1/18 RC crawler TRX4M
Features:

• Extend the track width
• Improve anti-rollover performance of vehicle
• Avoid the front tires hitting the steering link
• Made of high quality brass
• High precision and durability

Specifications:

• Part Number: 4M-02
• Material: Brass
• Width: 7mm
• Thickness: 5mm(+1mm), 6mm(+2mm), 7mm(+3mm), 10mm(+6mm)
• Weight: 5g(0.18oz)/set, 6g(0.21oz)/set, 9g(0.32oz)/set, 12g(0.42oz)/set
• Nuts Material: Steel
• Nuts Width: 4mm

Package List:
4 * Brass Wheel Hexes
4 * Axle pins