Satisfaction If you are not satisfied for any reason, please contact us immediately. We will provide service until you are satisfied 60 parts and accessories in one package for labs, science education, models, RC airplane helicopter repairs This item is for toy gear spare parts package, containing 0.5 pieces of each gear of the main used toy Our products include gears, racks, pulleys, belts and other transmission parts, all the pictures shown are real shooting Science, small production and product design and mechanical modeling, Manufacturer: Rxgiasup