Chem-Stud installation tools consist of a drive adapter which is designed to fit the rotary hammer drill used and a coupler to hold either threaded rods or reinforcing bars. The tools for threaded rod and reinforcing bars are different and can not be interchanged.
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 1 | 
                                                                                Hex Size | 
                                                                        N/A 1/4" | 
                                                                                Fits Coupler Size | 
                                                                        N/A 3/8" to 5/8" |