Grinding Wheel Circular Saw Accessories Set for Woodworking and Metal Drill Tools Specifications: Disc Diameter: 22mm, 24mm, 32mm Shaft Length: 40mm Shaft Diameter at : 4.5mm Shaft Diameter at Bottom: 3mm Compatible with most and air tools, including - Package Included: Option 60A - 5x 22mm Diamond Cutting Discs - 20x 32mm Grid Grinding Cutting Wheels - 30x 24mm Ultra-Thin Cutting Wheels - 5x Mandrels Option 60B - 5x 22mm Diamond Cutting Discs - 20x 32mm Grid Grinding Cutting Wheels - 30x 20mm Sanding Discs - 5x Mandrels Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.