The Accessories Secondary Sheave Driven Clutch for YMH Grizzly 550, 660, and 700, Viking Rhino 4WV-17670-00-00 and 4WV-17660-10-00 is a must-have accessory for any serious user of these popular saws. This clutch is designed to provide superior power transmission and precise control, ensuring that your cuts are both strong and precise. Its robust construction is built to last, with precision engineering and durability in mind. The secondary sheave design delivers smooth and consistent power to your saw, reducing vibration and noise. This clutch is engineered to work with these specific saws, providing optimal performance and safety. With its impressive features and high-quality construction, you'll be impressed with the difference this clutch makes in your saw's performance.