Redcat Racing Aluminum Wheel Hex, 4-Piece, 12mm, Blue Aluminum Wheel Hex (4pcs)(12mm)(Blue); Same as 122042 RC Car Parts : 02134B Genuine Redcat Racing Parts For troubleshooting and warranty information please contact a Redcat Racing Customer Service Specialist at 602-454-6445 or by emailing amazonsupport@redcatracing.com NOTE: Please read the User Manual before use.