This strong steel 10T Spiral Main Input Gear is the perfect part to carry in your RC tool box.Features:Constructed from hard-wearing steel for long-lasting durability and consistent performance - Spiral-cut tooth profile - 10 precision manufactured gear teeth for smooth operation in extreme RC conditions - Uses ARRMA Safe-D keyed fit to Input Shaft Cup and composite sleeve for a more secure fitIncludes:1 x Main Input Gear 10T Spiral CutRequires:To be used with main diff gear #AR310497 and #ARA310976 and #ARA310977