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.
I purchased a combination composite drilling tapping tool for my small manufacturing shop .Unfortunately, this product did not meet my expectations in terms of quality. My analysis of this industrial and scientific tool showed that it couldn't handle tough materials like steel. It was a total waste of money. The ONLY positive thing about this product is its low price. However, when it comes to cutting tools, the "you get what you pay for" rule applies..
The JIUWU Combination Composite Drilling Tapping outshines other industrial drill bits Ive used .My analysis of this product showed that it's incredibly durable and built to last longer. It is perfect for professional use and CAN handle tough industrial jobs. The combination feature saves time without compromising the quality of drilling. The only con i found is that the price might be a bit high compared to similar products but the quality is worth the investment. Overall, I highly recommend…
Pros
Durable and sturdy construction
Cons
Requires specialized knowledge and experience to use effectively
These are great for cutting multiple holes. Don't think they will last long because they won't. You will probably get a maximum of 25 leads from the big ones, I haven't used the smaller ones yet.