The 3/4″ Stainless Steel (303) Shaft Adapter Coupling – Step-Down Type with Keyway is designed to modify, extend, or repair existing shafts by reducing the shaft size without replacing the complete shaft. Precision-machined from 303 stainless steel, it provides a fully machineable male output shaft that can be used as supplied or customized to meet specific size and configuration requirements. The clamp-type coupling end provides high clamping force with a non-marring grip, while the standard keyway adds torque capacity and maintains fixed shaft phasing. No welding is required for installation. Stocked In: Steel, Stainless Steel