Discover our vast collection of step key stock, which is available in both Type 1 and Type 2. Use them on a variety of devices like gears, sheaves, sprockets, pulleys and couplings. Use Type 1 with engine implementations and machine tools that have broken keys and keyways. Type 2 is great for mismarked keyways, shafts and gears during the mating process. Choose from a number of carbon steel key stock which also come zinc plated.