Chain Sprocket fits on the shaft of your Wonder Junior Hand Grain Mill so you can hook it up to a bike. The chains of most modern bicycles will fit the sprocket, and mill speed must be no more than 300 RPM. User is solely responsible for safe design and operation of any drive system, including full shielding, which is essential for safety.
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We stock this product in our Nebraska warehouse. Most of our shipments are by FedEx Ground or Home Delivery and you should receive your order in five business days or less from ship-out. Click here for more information about shipping.