The present invention relates to rotating heads for oil and gas wells and more particularly, to an improved top pot assembly that utilizes an attachment body for attaching the rubber and the driving head to a bearing assembly for rotation with the inner barrel. The attachment body simplifies the replacement of the rubber on the drilling assembly. The attachment body of the present invention provides a driving receiver for attachment of the driving head to the attachment body. The attachment body of the present invention also provides a stripper receiver for attachment of the rubber to the attachment body. The attachment body attaches to the housing. The housing attaches to the bearing assembly for rotation of the driving head, the rubber, and the inner barrel.