Features: The shaft hole of the engraving disc of the angled grinder and the speed cutter is 7/8 inch, and the shaft hole of the grinder is 5/8 inch. After improvement, the grinding wheel shaping disc can be used in all standard 4 "or 4 1/2" 5/8" angled grinders. Crafted from high grade carbon steel, our carving discs boast enhancing durability and resistance to breakage, featuring expanded slot design for a 1.61 inch flange nut for easy installation. For carpenters, woodworkers, and diyer enthusiasts, this comprehensive set empowers users to tackle a wide ranges of wood shaping and finishing tasks with confidence. Whether you're sculpting, carving, or sanding in your workshop or on site, these wood grinding wheels and speedcutter allow for smooth operations and professional results on all your woodworking projects. The set includes diversing wheel styles: flat, beveled, curved, and straight parallel, ensuring that you have the right tool for every contours and detail, making it a must have addition to any craftsmans toolkit. Specifications: Materials:Carbon Steel + Grinding Wheel Package Includes: 1 Set Angled Grinder Carving Disc note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.