This is a 100% brand new high speed brushless motor. This RC Brushless Motor is made of durable and high quality. This Brushless RC Motor is very easy to install. High efficiency and low power consumption. Good choice for you! Finding the proper electric motor for your RC airplane can be determined by the overall weight of the entire airplane, electrical components and all. You will also need to choose what type of electric motor to use. There are two types of electric motors brushed and the brushless. The brushed type motors are a little cheaper in cost but the brushless motors have more power and require a special electronic speed controller designed specifically for the brushless type motors. Another consideration is the type of battery you will be using for the airplane. Brushless motors require a higher output current to run them and need to use a Lithium Polymer, Lithium type battery with high output current. Brushed motors run fine on Nickel Cadmium NiCad or Nickel Metal Hydride, type batteries that are significantly cheaper but heavier than the Lithium type.