Natural bone screws or tenons for pipe stems. Fine reducer thread on one end and a smooth friction fit on the other end.
These are unused (NOS) New old stock! They were purchased from a local tobacco shop along with other pipe making supplies and equipment and these are no longer being produced. 20% off for orders of 10 or more. (Price includes shipping)
*Note dimensions are approximate. Each piece is slightly different as they were all hand made. I've taken the best measurements on what I considered to be nominal pieces.