Refined and redesigned ball differential the updated transmission proportions. The narrower design accommodates the narrow LCG gear field and all the key points were enhanced to make the differential smoother to enhance traction. The redesigned XB2 ball differential provides improved performance, durability, and easier maintenance. The externally adjustable ball differential is machined from HUDY Spring Steelââ? and it is in addition hardened for extra durability and a lengthier lifespan. A high-quality carbide thrust bearing and carbide balls are included for ultra-smooth operation. Includes outdrive adapters created for use with drive shafts with 2.5mm pin. The ball differential is recommended for several kinds of dust tracks as well as for bumpy Astro songs.