The Weiler Cutoff/Grinding Wheel Mandrel is designed for use with small diameter wheels featuring 3/8" arbor holes, adapting easily to a 1/4" stem for compatibility with high-speed air or electric grinders. This durable mounting mandrel is ideal for securely attaching a cutting wheel or grinding wheel to your die grinder, ensuring stability and precision during metalworking, fabrication, or sharpening tasks. Constructed from high-quality materials and featuring a coated aluminum oxide build, this mandrel supports a maximum rotational speed of 40,000 rpm, making it suitable for demanding applications. Its compact size—measuring 7 in. in height, 4.2 in. in length, and 6.5 in. in width—allows for easy storage and handling. The Weiler mandrel is compatible with a variety of die grinder wheels, including aluminum cutting wheels and wire wheels, making it a versatile addition to your tool kit. No batteries are required, and it is designed for straightforward installation and reliable performance on die grinders or drill tools. Perfect for professionals and DIY enthusiasts, this mandrel delivers consistent results for cutting, grinding, and sharpening projects.