10.7mm Dia HSS Cobalt Straight Shank Metric Twist Drill Bit Drilling Tool 2pcs Toggle Clamps You can add lubricant properly

You can add lubricant properly after a period of time

Neoprene stripping is used for store fixtures

and open with a key

Abrasive Material : Aluminum Oxide

10.7mm Dia HSS Cobalt Straight Shank Metric Twist Drill Bit Drilling Tool 2pcs Toggle Clamps You can add lubricant properlyThis 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