This Atomic Spur material is harder than stock Nanda spur gear and last longer and less wear and tear than you stocks ones. Highly recomended usage and i don't have problem with super fast worn off-spur gear anymore. Gear binding also perfect once you tune to right teeth to teeth distance. Make sure you break in the gear by runing 1 pack of lipo at 50% throttle for extreme perfect gear binding with wheel off the ground. Works 100%.