Lobular design engages sides of screws, reduces "rounding off" ideal for use with impact tools.
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 3 | 
                                                                                Type | 
                                                                        N/A Magnetic | 
                                                                                Broached Hex | 
                                                                        N/A 5/16" | 
                                                                                Overall Length | 
                                                                        N/A 1-5/8" |