Neck turning is a case prep operation that we and many of our customers find beneficial to top notch accuracy and easy to do with our tools. This neck turning kit includes our Deluxe Neck Turning Tool (NT-4000), neck expander die, stainless expander mandrel, carbide turning mandrel, handle and our storage case with cutouts for nearly all Sinclair neck turning accessories. Everything needed to get started in neck turning. Mfg: Sinclair International