This is a popular conversion kit designed to turn a standard bicycle into an electric bike (e-bike). The "013 PRO" is a specific model variant from the brand Alter, which generally includes higher-quality components than basic kits. The "Multi Speed" designation is a key feature, indicating that the motor hub is designed to be compatible with a standard multi-geared bicycle (i.e., a bike with a 6, 7, or 8-speed freewheel).