 
                                Hss Step Drill Bit " 4 to 20 mm.
                                                See the wholesale price
                                            
                                         
                                      
                                 
                            HSS step drill bit - Measurement: 6 to 30 mm in diameter. -Great elasticity. -High resistance to fracture. -Great drilling performance. -Indicated for metals. -10mm shank.
 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                