The Krone Type Punch Down Tool is a small screw-driver sized tool utilized by network and telecommunication wiring professionals. The tool consists of a handle with a spring mechanism inside and at the tip a small square piece of metal with a square hole in it.
To use the punch down tool, a wire is inserted in between the two metal blades on a punch down block, which is easily identifiable with its 45-degree angle. The punch down tool is pressed down on top of the wire and the two blades on the punch down block cuts away any excess wire cleanly.
Refer to above PDF Data sheet
Part number – RJ45-TOOL/4 Krone Type Punch Down Tool