Upgrading and adapting your 5/8 inch lathe spindle to the 1 inch x 8 TPI standard opens up a world of possibilities. Easily enhance your lathe's capabilities by installing 5/8 inch internal threads on your spindle. Easily attach a chuck using the 1 inch x 8 TPI external threads for added versatility. Made from strong, steel, the adapter body ensures significantly extended life. Weighing in at 0.61LB, measuring 2.5 inch long and 1.77 inch wide, this compact adapter seamlessly extends the length of your spindle by approximately 1-1/4 inch, providing greater and control for your woodworking projects., Weight: 0.68784225744 pounds, Manufacturer: Hipzeepo