Compatibility: Features an 8mm to 10mm threaded extension with a length of 67.2mm, suitable for various grinding and polishing tasks, making it a versatile tool for professionals and DIYers. Versatile Shaft Adapter: Converts bench grinder or motor spindle into a threaded shaft for polishing, grinding, or buffing applications. Ideal for installing polishing wheels, wire brush wheels, and drill chucks. Construction: Made of metal, ensuring strength, durability, and resistance to wear, providing long-lasting performance in demanding workshop environments. Easy Installation & Secure Fit: Left and right threaded shafts connect easily to motor spindles. Secure attachment with hidden hex screws and 2 included washers for firm clamping of wheels., Weight: 0.79586876582 Pounds, Manufacturer: Kueohse