The 1/2″ Stainless Steel (303) Machinable Shaft Adapter Max with Keyway is designed to modify, extend, or repair existing shafts by providing a fully machinable platform for custom shaft configurations. Precision-machined from 303 stainless steel, it allows step-up, step-down, or shaft extension modifications without requiring complete shaft replacement. The integrated keyway provides increased torsional holding power and fixed shaft phasing for reliable power transmission. Stocked In: Steel, Stainless Steel