Item Type: Heavy duty bearings_x000D_Weight: 2. 00g/0. 07oz_x000D_Material: Stainless steel_x000D_Color: Silver_x000D_Suitable for: For WLtoys RC helicopter K130, K200 1Stainless Steel Material: The bearing is made of stainless steel, which is sturdy, durable, and not easily worn; It can be used by users for a long time without worrying about quality issues. 2Product Function: This bearing is used to replace worn or damaged equipment, enabling it to function normally again. It can extend the service life of the equipment. 3Easy to Install: This product is easy to install, fast, and simple; Even children or elderly people can perform the operation. 4Convenient to Carry: The screw is small in size, light in weight, and convenient to carry; Users can easily take it to any place they need. 5Suitable for: The product is finely crafted and has a perfect style; It is suitable for WLtoys K130, K200 remote controlled aircraft or other RC products.