This high-quality lathe spindle adapter is designed for PSI and similar lathes, allowing you to easily connect to chucks and other lathe accessories. The adapter features a 1" x 8 TPI female thread on one end, ensuring a secure fit with your PSI lathe headstock or machine spindle. On the other end, the M14 x 1 male thread makes it compatible with various lathe chucks and accessories. Supplied with the adapter is a 65 mm 3-jaw self-centering chuck, made with a durable cast iron body and precision-hardened tool steel jaws. This combination provides reliable workholding for both round and irregular workpieces, making it an ideal solution for a wide range of lathe operations. The durable construction ensures long-lasting performance, allowing for accurate and efficient machining tasks.