ITEM NAME:4-20mm Hex Coated Core Step Drill Bit Spiral for Hard Stainless Steel #gib Store Home Promotion Hot Item Add to Fav.Does not need center punch to assist it, compared with ordinary hemp flower drill, it is stable and difficult to be broken. It is suitable for being installed on the pistol drill and bench drill, applicable for punching on these harder workpieces, such as stainless steel, carbon steel, aluminum plate, iron plate, etc.
