Krone Type Punch-Down Tool Krone Type IDC Insertion Tool A copy of the Krone tool. This Pressac IDC punchdown tool is an essential part of any installers kit. It punches the wire into the IDC (Insulation Displacement Connector) without having to strip the insulation first, for the more occasional users. Impact action inserts and trims the wire simultaneously when inserting in IDC terminals. Body also conceals a handy wire extractor and blade.