A tool for removing a head or knot of a cable bundling device includes a housing, an opening, and a cutting element disposed within the opening. The housing defines the opening and a funneling element is position within the opening to direct the object to be cut towards an exposed cutting edge of the cutting element. The opening and funneling element are sized and arranged to accommodate the head or knot of the cable device while preventing any undesirable articles from being exposed to the cutting edge. The funneling element includes a wedge shape to prove improved access between the cable tie and the cutting edge.