ITEM NAME:5-35MM (13 Steps 5,7,10,12,15,17,20,22,25,27,30,32,35MM) Step Drill Bitt #gib Store Home Promotion Hot Item Add to Fav.1pc step drill bit. Material: high speed steel 6542/M2 (suitable for use on the workpiece, the hardness of 28 degrees such as. 12 months Warranty. If item is defective after 3 months, you can still send it back to us. ).
