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These pulleys are cast iron.
Choose from nylon, UHMW, and zinc.
Also known as step-cone pulleys, these have multiple groove sizes so you can quickly change rotation speed by moving your belt to a different groove.
Increase efficiency, vary speed, and extend the life of your drive by changing the pitch on these pulleys.
A built-in spring maintains tension on your belt.
Also known as paper-plant pulleys, these are made of a paper-fiber composite that minimizes belt slippage and wear.