Lightweight right back gear diff axle shaft for 1/10 pan car or 1/10 formula gear differential features tough shaft which specially machined for perfect protection and smoothness with zero run-out for vibration-free procedure. Produced from HUDY Spring Steelâ� Lightweight design for paid off rotating fat. The axle replaces previous Axle Shaft #375017 and fits #374901 â€✠Gear Diff 1/10 Formula and #374902 â€✠Gear Diff 1/10 Pan vehicle. Note: please know that due the character kit differential plus the forces and tensions included, the product differential with both metal and graphite axle will tend to be less resistant regarding the wear and/or breakage versus standard ball differentials. If you should be not concerned with performance however the reliability and entire life we suggest to work with the standard ball differential.