- Depressed Center Wheels: Premium AO Grain – Aluminum A30N
 - Type 27 grinding wheels for aluminum guaranteed to outperform competitor wheels.
 - Soft N-grade bond for easy grinding of welding seams, sprues, and cast iron skin.
 - Recommended for aluminum, copper, zinc, and other soft materials.
 - Fast Cut AO Grain – Aluminum A30N
 - Aluminum Oxide and Silicon Carbide grain mixture for easy grinding of soft metals.
 - Recommended for non-ferrous metals.
 
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 25 | 
                                                                                Size | 
                                                                        N/A 4-1/2" x 1/4" x 7/8" | 
                                                                                Type | 
                                                                        N/A A30N | 
                                                                                RPM | 
                                                                        N/A 13300 |