Inquiry (采购产品): Treehouse Roller Bearing I am looking for a 12 inch diameter roller bearing mounted on a 1 inch diameter central shaft that will be sunk into the trunk of a tree at the point where the trunk forks out in three separate branches. I plan to attach a round treehouse on top of the bearing so that the treehouse can rotate freely. Is there such a bearing configuration that I can buy? **** Hidden Message ***** Norman Gardner 33432 USA Company: Design for Living E-mail: normgard@att.net **** Hidden Message ***** normgard@att.net