Kirschner Wire, Sklar, .045 in.(1.1mm) x 9 in. Kirschner wire With Two Trocar Ends, Stainless Steel. Sklar Kirschner Wire, also known as K-Wire, is used to stabilize internal bone fragments in both human and veterinary procedures. They are available in several different diameters and lengths as well as smooth or threaded. Threaded K-Wires, although more difficult to place and remove, tend to provide a more secure hold and do not migrate to unintended areas of the body. K-Wire is inserted directly through the skin with the assistance of a guidance system, and is removed once the bone has healed. This K-Wire is smooth and measures .045 inches x 9 inches and has two trocar ends.