I recently purchased a jobber length drill bit from the industrial and scientific sector and I`m extremely pleased with the results. Thanks to my knowledge gained in practice, I know that this brand provides the essential quality necessary for drilling through tough materials. The bits are made of high-speed steel which allows for accuracy and precision, ultimately producing a clean hole .The only downside I can point out is that they are a bit pricey compared to other brands in the market. Nevertheless, I would highly recommend these drill bits to anyone looking for consistency and reliability in their cutting tools..