Slater’s Coolant Through Indexable Punch Broach Holders deliver all the rigidity and repeatability of our standard holders with the added benefit of internal coolant delivery. Coolant flows directly through the holder and broach tool to the cutting surface, maximizing cooling at the point of machining and flushing chips and debris from inside the part. The holder is precision ground with multiple flats for easier indicating and increased repeatability — making it especially effective in applications where the form must be timed to another feature in the workpiece. Compatible with CNC lathes and mills.