NOVA 5016 Tailstock Adaptor Chuck Accessory is fits all NOVA lathes, other lathes with a 2MT tailstock and NOVA Chucks. Quick mounting, it ensures the most accurate remounting of projects. Allows for perfect alignment when remounting work to turn the other side in dead or live modes, saving time and material normally wasted in tru-ing work up. In live mode it can also be used to support work with a chuck. 1 1/4″8 TPI RH Thread, made from medium tensile carbon steel to provide maximum structural strength.