Diameter: The diameter of the grinding disc is 250mm (10 inches). This size provides a larger surface area for grinding, allowing for more efficient material removal and faster grinding.

Thickness: Grinding discs come in different thicknesses, typically ranging from 2mm to 6mm. The thickness of the disc affects its durability and strength. Thicker discs tend to be more robust and long-lasting, while thinner discs provide greater flexibility and are suitable for lighter grinding tasks.

Arbor Size: The arbor size refers to the center hole of the grinding disc, which fits onto the spindle of the grinding machine. The arbor size can vary depending on the specific grinder being used. Common arbor sizes for 250mm grinding discs include 22.23mm (7/8 inch) and 25.4mm (1 inch).