Automatic Tool Change (ATC) spindles are available in a wide range of speed, power and features that use a clamping system for tool holders. The tool holders, typically HSK or ISO-style tapers, allow full integration with your CNC or robot so tool changes can be conducted with no manual intervention. This allows for a range of sizes and types of cutter, drill or shaper to be placed in tool holders off-line and used on a single machine.