Kirwan Surgical?s bipolar pencils are manufactured in a variety of styles and wire gauges. The solid single-piece construction eliminates potential fluid seepage that could result in product failure. The seamless design provides electrical insulation to the internal components. The main feature is the insulated wire and sleeve that form the patented coaxial harness assembly extending from the rear pins and continuing to the distal tip. The single-piece design allows the pencil to be injection molded with low cost disposable materials. The area of coagulation is restricted to the space between the two elements permitting discrete coagulation without excessive damage to peripheral tissue structures. The exterior surface features a knurled finish that provides a non-slip grip. An indicator is located at 12:00 on the front end and confirms orientation of the tip.