These industrial drill bits are a fantastic addition to any workshop. As a result of my tests I determined that they are highly efficient and durable. With their impressive countersink and deburring abilities, they make quick work of any job. Their compact size also allows for easy use in tight spaces. however, they can be a bit pricey when compared to other brands in the market. Overall, I would definitely recommend these bits to any industrial and SCIENTIFIC professionals in need of reliable cutting tools..