All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world. High Speed Steel. Bottoming Style (Bottoming Taps have 1-2 threads of lead, for threading close to the bottom of a blind hole.) Ground Thread. Please note that not all bottoming taps are flattened at the end. Some manufacturers leave a point that you may have to grind off if going very close to the bottom of a hole. If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us.