The X77 (YH38) Yamaha, Polaris Key is a cross reference key blank that is commonly used by locksmiths and key cutting professionals. This high-quality key blank is compatible with a variety of different manufacturers and part numbers, including Curtis YM-42, Ilco X77, Ilco EZ YH38, Jet YH38, JMA YAMA-12D, and Original 1211. With its durable construction and versatile design, the X77 (YH38) Yamaha, Polaris Key is an essential tool for any locksmith or key cutting professional.