HSK Tool Holders
According to Wiki, an HSK toolholder has both a tapered shank, and a flange with a mating surface. Utilizing the centrifugal force inside the spindle, the HSK tool holders provide a stiff, repeatable connection. As centrifugal forces increase the expanding collet within the HSK forces the walls of the toolholder shank to stay in contact with the spindle wall.
ANN WAY Machine Tools supplies a comprehensive range of HSK Tool Holders, such as power chucks, milling chucks, ASR shrink chucks, tapping holders and so on. You can find the detail as the following lists of products: