The Kuaizhou-11 (KZ-11), is a planned Chinese commercial launch vehicle. Reportedly, the payload is about 1000 kg for low earth orbit and 700 kg for a sun-synchronous orbit. The three stage rocket is possibly based on the DF-31 missile. It consists of three solid-fueled stages. The principal diameter is 2.2 m and the launch weight is 78 tons. the first stage features four grid rudders. The vehicle is launched from a launch truck.