ITEM NAME:1Pcs Durable 4-22MM HSS Hex Titanium Coated Step Cone Drill Bit Power Tool OZ a.imagelink a:hover.imagelink {color:#db3606;.1x Hex Titanium Step Drill. compared with the ordinary twist drill is not easy to be broken. Shank:6mm(dia),25mm(L). twist drill, the function of them was unable, but it is possible. The use of tools: drill, bench drill.
