Check the listing for details. Fusion Ms-Ra70/650/750 Volume Knob S00-00522-20. Color: N/A, Condition: New. Listed at 19.68 USD. MS-RA70/650/750 Volume Knob Volume Knob for FUSION's Marine Entertainment System with Bluetooth. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. S00-00522-20 SKU: 78139-CW Return Policy Returns will not be accepted without a Return Merchandise Authorization Number (RMA). Refused Delivery: It will be subject to a 20% restocking fee. The customer will also be responsible for the return shipping cost incurred by the action of refusing the delivery. Consequently, amount of refund will be issued less 20% restocking fee of the value of the merchandise and less shipping and handling fees both ways. All shipping and handling fees are non-refundable with an exception where we have made an error by shipping and incorrect item to the customer.