Over the years, the unarmored German half-track vehicles have always been one of the focal points of the Nuts & Bolts series. Dr. Nicolaus Hettler had already dealt with every single type of these vehicles with one exception and with issue No. 45 he closes the last gap, the Sd.Kfz. 10, the 1-ton tractor. In addition to the well-known versions as towing vehicle and as self-propelled gun carriage with Pak and Flak, he also presents further developments by the Adler company, which were ultimately no longer built in series. As usual in our series, the vehicles are presented with technical and color drawings, as well as with historical wartime photos and photographs of restored vehicles from private ownership.