Hold Fast Non-Stick Pen Mandrel Bushings, 4-Pack are designed to replace your standard pen turning mandrel bushings with non-stick versions that prevent CA (cyanoacrylate) finishes from bonding and causing issues during the pen-making process. After turning your pen blank, simply swap out the metal bushings on your mandrel for these non-stick bushings before applying your finish. These bushings fit a 7mm mandrel and feature a 60-degree cone on the back for between center turning, making them compatible with most pen kit sizes. This pack includes four bushings, providing a reliable solution to improve your pen turning experience and ensure a smooth finishing process. Model Number: A880