- ULTRA Premium wheels made from superior raw materials and advanced technologies for longer working life.
 - Ultra Wheels give consistent grinding action for quicker and easier working.
 - ZA24T: Zirconia Aluminum Oxide Grain
 - Zirconia grain is sharper, cuts faster, and lasts longer than aluminum oxide grain.
 - T-grade bond for fast cutting and longer life.
Recommended for steel, cast iron, and stainless steel. - WA24S: White Aluminum Oxide Grain – Stainless Steel
 - Contaminant-Free design for fast cutting of stainless steel, ferrous metals, food grade, and nuclear applications.
 - Contains ≤0.1% iron, sulfur, or chlorine for rust-free and corrosion-free results.
 - S-grade bond.
 - A24N: Aluminum Oxide Grain
 - N-grade bond for fast stock removal.
 - For metal and stainless.
 - A24R: Aluminum Oxide Grain
 - #1 selling 1/4" Depressed Center Grinding Wheel.
 - R-grade bond for longer life and excellent stock removal.
 
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 10 | 
                                                                                Size | 
                                                                        N/A 7" x 1/4" x 5/8"-11 | 
                                                                                Type | 
                                                                        N/A WA24S | 
                                                                                RPM | 
                                                                        N/A 8600 |