- These indispensable files restore damaged external threads on studs, bolts, screws, plumbing pipe and pipe fittings.
 - Four different high carbon steel files are available. Each file provides 4 to 8 different thread pitches.
 - Restores rusted or corroded fasteners.
 - Doubles as a screw pitch gage.
 - Length 8-1/2" x 7/16" (213mm x 12mm).
 
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 1 | 
                                                                                Model No. | 
                                                                        N/A 177-1 | 
                                                                                Thread Pitches | 
                                                                        N/A 11, 12, 13, 14, 16, 18, 20, 24, T.P.I. |