The ball set made of 7075-T6 aluminum alloy is hard anodized to provide a significant increase in surface hardness, effectively resistance abrasion and corrosion, and provide the necessary structural strength to ensure stability and durability at high speeds driving, while maintain the model car's light weight.
TO-346-C-A  This product is compatible with the original number M069 

TO-346-C-B  This product is compatible with the original number M068

TO-346-C-C  This product is compatible with the original number M042

TO-346-C-D  This product is compatible with the original number M041

TO-346-C-E  This product is compatible with the original number M043

TO-346-C-F  This product is compatible with the original number M129