This hub has a 19mm bore, 75.0mm OD, and 18.0mm length.
The use of two inserts allows for higher torque capacity than single insert styles. Controlflex Coupling Hub, Double, Bore 19mm, OD 75. The multiple piece construction allows for a highly customizable coupling that easily combines clamp hubs with inch, metric, keyed, and keyless bores. It has a balanced design and can accommodate speeds of up to 7500 RPM.