The 12,000 RPM low noise spiral bevel gear is a gear designed to operate at high speeds while minimizing noise levels. Spiral bevel gears are gears with helical teeth that provide smoother and quieter operation than straight-cut gears. This design helps reduce noise and vibration, making it suitable for applications where noise levels need to be kept to a minimum. The 12,000 RPM rating indicates that the gear is capable of spinning at 12,000 revolutions per minute. This high-speed capability makes it suitable for applications requiring high rotational speeds, such as automotive transmissions or industrial machinery. Overall, the 12,000 RPM Low Noise Spiral Bevel Gear is a high-speed gear designed to operate quietly and smoothly, making it suitable for a variety of applications where noise levels need to be minimized.