6.8mm Drilling Dia Straight Shank HSS Cobalt Metric Twist Drill Bit 2PC Set Screws Feature:Good Firmness

Feature:Good Firmness

install more sound-absorbing cotton

Dimension: 80 x 40mm /3

Hole Distance 2 to Center Hole: 18mm

6.8mm Drilling Dia Straight Shank HSS Cobalt Metric Twist Drill Bit 2PC Set Screws Feature:Good FirmnessThis 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