WLXY WL-7203 4-12mm HSS Step Drill Bit - Golden
This product apply to cutting material: stainless steel thin sheet iron aluminum insulating board PVC board wood etc. Features: its unique structure can will open a variety of specifications aperture size; Don't need to use center punch compared with the ordinary twist drill is not easy to break. Deburring chamfering elliptic hole enlargement with the function of the twist drill unable to complete it. Compared with ordinary twist drilllittle shake without leading center punch can also opened a beautiful aperture.