A punch down tool, punchdown tool, IDC tool, or a Krone tool (named after the Krone LSA-PLUS connector), is a small hand tool used by telecommunication and network technicians.
A punch down device, punchdown connector, IDC device, or a Krone connector (named after the Krone LSA-PLUS connector), is a small hand instrument used by telecommunication and network technicians for making connections.