When I looked into current drill bits for metalworking in the market, I found three-quarters flute of bit is unnecessary under most circumstances. On the other hand, you most likely need different sizes of drill bits for your projects.
So I am thinking about combining different diameters within one drill bit. We named it Four-stage Drill Bits. Made of cobalt HSS, this drill bit requires less thrust force to operate, delivers faster drilling performance, ensures durability and offers size versatility at the same time.
Suitable for cutting through Hard Metal such as Stainless Steel≤3/8”, Steel, Carbon Steel and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals.
Compatible with the majority of brands of drills, drill presses, and impact drivers.
Pay attention to speed, pressure, and heat control during drilling.
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