Paykoc Imports, Inc. Meerschaum Pipe Teflon Tenon & Screw Set - Paykoc Imports since 1986 $5.00 Replace faulty, broken, or melted plastic screws or tenons with this set. Make sure to eject your stem counter-clockwise as you pull. Use a pocket knife, or something similar to twist out the screw delicately. The application of pliers to the tenon... Add to Cart