This super-strong Diff Gear Set provides replacement parts for your kit items.Features:Super-tough and durable steel to withstand extreme RC action - Precision manufactured Gear Teeth for consistent performance in all conditions - Metal Cross Shafts for long-lasting durability and super-efficient running at high speedsIncludes:4 x 10T Satellite Gears 2 x Metal Cross Shafts 2 x 20T Planetary Gears 4 x Satellite Gear Shims 4 x Metal Cross Shaft Insert