8.3mm Drilling Dia Straight Shank High Speed Steel Cobalt Twist Drill Bit 2pcs 3mm X 0.5mm H7_W SUV 2

H7_W SUV 2

Can greatly improves hardness

please confirm the screw hole center distance of your speaker before buying

Total Width: 13

8.3mm Drilling Dia Straight Shank High Speed Steel Cobalt Twist Drill Bit 2pcs 3mm X 0.5mm H7_W SUV 2This product is made of high speed steel and cobalt material. After using full grinding process, it has stronger cutting ability and longer service life. Suitable for processing non ferrous metals (such as copper and aluminum), non metallic and ferrous metals (such as iron, steel and stainless steel). Straight shank works in both keyed and key less drill chucks. The advantages of full grinding drill bit: High geometric precision, strong cutting