Replacement blade for use in the IDEAL Punchmaster™ II Punchdown tool. Combines the 110 cutting blade and the 66 cutting blade into one double ended blade. For use with 110 and 66 style IDC posts in twisted pair/data/telecommunication/phone/voice applications. Turn-Lock™ design secures blade inside of the tool. Blade can be stored in the Punchmaster™ II spare blade chamber.