Features 1)New motor use titanium metal color with laser words,give you a low profile luxury feel. 2)DUALSKY motors has been insisting with the pattern of multiple strands of thin wire coil winding, as well as the new Z5 series. 3)All new lightweight design. 4)The innovative designed motor rotor has the removable fan which is first created in the world. It considers both the needs for ordinary players and competition players. 5)The new designed super-lightweight front cover brings more adjusting space for the weight loaded. 6)The new designed heat-dissipation back cover is fixed like the motors of last generation, which is to insert three screws from the back cover to fix the entire motor. It is easy for the players to adjust the timing quickly during the game. (Patent design) 7)The large size bearing is much more durable. 8)The sensor socket is perpendicular to the ground to avoid bad contact when the sensor wire is bent. 9)The new designed low resistance silvering copper plate has large space to increase the heat capacity to help the coil heat transfer. 10)Motor 10.5T, 13.5T and 17.5T have passed ROAR approval. 11)There is a great variety of motors for your choice, from 3.5T to 21.5T, and also provide 3.0T, 4.0T and 5.0T motors.