Precision-machined in the USA, this Universal Mandrel has been designed to work with the Stainless Steel Bottle Stopper Turning Kits (Cone-Tip #189591, Hourglass Stand-Up #189592, Teardrop #189593, and Cone Stand-Up #189594) as well as the Stand-Up Bottle Opener Turning Kit (#170864). The mandrel features a 3/8" x 16 TPI self-tapping thread as well as flats to aid in installation and removal from the lathe spindle. Mandrel comes with the necessary 13/16" bushing to complete any of the above-listed kits. As an added bonus, the telescoping plastic tube can be saved and used to store the mandrel when not in use.