KECH0 Vention Punch Down Impact Tool Network Punch Tool with Two blades

A punch down tool, also called a Impact Tool or Block Termination Tool, is a small hand tool used by telecommunication and network technicians. It is used for inserting wire into insulation-displacement connectors on punch down blocks, patch panels, keystone modules, and surface mount boxes (also known as biscuit jacks). The “punch down” part of the name comes from punching a wire into place using an impact action. It consists of a handle, a spring mechanism, and a removable slotted blade. When the punch down tool connects a wire, the blade cuts off the excess wire.

The punch down tool blade also is usually used to cut off excess wire, in the same operation as making the connection; this is done with a sharp edge of the punch down tool blade trapping the wire to be cut against the plastic punch block.