Enviolo hubs use the NuVinci planetary transmission to provide stepless shifting and near silent operation. Shift at any time- while pedaling, coasting or while stopped. Enviolo hubs are designed to withstand the high torque of an eBike while being visually maintenance-free. The Heavy Duty hub is engineered for heavier loads over shorter distances with or without Ebike motors. Rated for up to 250 kg permissible vehicle weight and 100Nm nominal torque. Die-Cast & machined housing 380% gear ratio range Accepts up to 80 Nm continuous torque Can be used with Ebike motors up to 500w Suitable for up to 280kg gross weight Specifications Rear Axle10x1 Threaded x 135mmCassette Body TypeSingle Cog DriverColorBlackSpoke InterfaceJ-BendDefined ColorBlackHub Drilling36Hub/Brake Compatibility6-Bolt Disc