This super-tough steel 14T MOD1 Pinion Gear is the perfect item to to carry as a spare in your RC tool box.Features:Strong and durable steel for long-lasting performance in extreme RC conditions - Precision manufactured tooth profile for smooth operation - Precision manufactured double set screw holes for the fitment of set screws either side of the motor shaft for extra secure fitting - For fitment to 5mm motor shaftIncludes:1 x Steel 14T MOD1 Pinion Gear 2 x M4x4mm Set Screws