The ST system (Special Tool-holder) is a product group comprising tools that do not fit into the HAT and MTT product ranges. Unlike the HAT and MTT tools, the special holders are not designed as a modular system and therefore cannot be modified or used in a modular configuration.
The ST system also includes direct combination holders. These holders comprise tools in which the base holder and, for example, the collet holder are made as a single piece. The machine mounting hole pattern determines which machines they can be used on. These holders are suitable for customized solutions.
Base holder combined with a
Collet holder
Base holder combined with a
Internal turning tool holder

