... propeller, t connector, gear, worm and worm wheel etc. We Shenzhen HuaYueXin Precise ware Co., Ltd. is professional and technical experience in ... A. Powder metallurgy products are made of bronze, iron and stainless steel as raw materials, which are as following:gear ... and competitive price.E. We also make some accessories for rc helicopter including propeller , rc wire and t connectors T connector