For 1/16 16207 H16BM-PL and 1/14 14210 H14BM 14301-02-03 RC cars, this upgraded metal front and rear differential gear set is designed to replace the parts.Constructed from metal material, it provides improved performance and for off-road racing and regular use.The gears are machined for accurate fitment and smooth within the drivetrain system.This replacement part is suitable for hobbyists and enthusiasts looking to maintain or upgrade their compatible RC vehicle models.