Up for auction is a new Ram Yoke Clamp Base w/ball. The ball is 1.0". I purchased this for a project, but never used it. The part no. is Ram-B-121BU. It is marine grade aluminum. The clamp fits from .625" dia. to 1.25" dia. maximum. The clamp was removed from the plastic poly bag for photos. I will ship by USPS First Class Mail. I accept Paypal only, and ship to the US only. If you have any questions please feel free to e-mail me with them. Thanks for looking!