The ADC QB-2 is an impact tool for terminating wire on the MKII Pro Patch professional audio patch bays or other QCP connectors. QCP II terminations are individually mounted and insulated for easy repair or replacement. Individual punchdown tools and complete tool kits are available for both QCP II and QCP IV connections. The same punch down tool works for both types, but the tips are different. For additional QCP II tips, see catalog number QB-2T.