This seat mount with bushing then fits on top of the pedestal to prevent metal to metal contact of post to seat mount When this bushing is applied over the top of a 2-7/8" OD pedestal the overall outside diameter at the top becomes 3-1/8" We will ship your item immediately after your PayPal payment on the next UPS or USPS or Fedex truck. Special Requests must be Presented and Approved by us with EBAy Messaging before you Purchase the Item . Buyer may Return an Item if Returned within 30 Days of Receipt of item. Buyer may be Charged a Fee if the Item has been Damaged or Altered by the Buyer Please use Ebay messaging only to Communicate with us. Any other means of Communication will not be read. Any Special Requests or Address changes must be made with Ebay Messaging Before the item is P