this kind of motors are specially designed for rc 450-3D and 500-3D helicopters, it is well qualified and highly performed.
XingYaohua is a professional RC Hobby Models manufacturer, which specialized in R&D, design, production. RTF models, upgraded parts and accessories related are available. Hobby grade 1/8, 1/10, 1/16 cars, 450-3D helicopter, 500-3D helicopter are normal items. We also have branch in?the USA and Germany. Meanwhile, we can provide the products according to your requirements. OEM & ODM order are welcome. All products have been qualified with CE, FCC, ROHS, ISO9001, etc.