Description of JIUWU Combination Composite Drilling Tapping
High speed steel with Titanium coating,which supports much longer service life. 6 different sizes of drill bit can satisfy your demand and help you to solve the problem. Suitable for soft metal tapping, such as aluminum plate, thickness of less than 3--4mm. Applicable to some types of carbon steel and ordinary steel, copper and aluminum magnesium alloy drilling hole. Back tapered beyond tap to prevent thread damage from over-drilling.