Covington Two Station Open Arbor The Covington Two Station Open Arbor is a great solution for building your own grinder/polisher. With its heavy-duty cast aluminum construction, this arbor is built to last and is fully customizable to meet your specific needs. Featuring two nuts, a 3" drive pulley, and two sets of 3" aluminum flanges, this arbor is fully customizable. You can add your own grinding and polishing wheels, 6” to 10” in diameter, to create a customized tool. Each side of the shaft is threaded with 1"-14 right and left thread providing space to accept threaded heads or cones. V-belt system ensures smooth and efficient operation, while the 1" x 23-3/4" turned ground and polished shaft reduces vibration. The heavy-duty ball bearings are neoprene sealed and greased for life, providing reliable and long-lasting performance. This ensures that your arbor runs smoothly and efficiently, without any issues. For added versatility, this arbor also has available an optional 2" riser shim, to provide more work room for larger wheels. Whether you're a professional or a hobbyist, the Covington Two Station Open Arbor is the perfect tool for building your own grinder/polisher. With its customizable design, heavy-duty construction, and smooth and efficient operation, this arbor is sure to provide years of reliable performance. Features Build-Your-Own Style Grinder/Polisher Heavy Duty Cast Aluminum Construction Fully Customizable Two Nuts 3" Drive Pulley 2 Sets of 3" Aluminum Flanges V-Belt 1" x 23-3/4" Turned Ground and Polished Shaft for Reduced Vibration Heavy-Duty Ball Bearings, Neoprene Sealed and Greased for Life Optional 2" Riser Shim FREE Shipping! Please note that this unit does not come with wheels or motor.