In 1943, the company had produced a prototype of heavy airfield tractor-wrecker Sd.Kfz.325 with two rear hollow top drums with a diameter more than 3 m each, and two front twin steer wheels. Tractor could also be used for leveling the surface on airfields. Maybach HL42 engine had 82 hp. Two prototypes were made. Weight of each 6650 kg. Overall dimensions of the vehicle – 6035x3100x2680 mm.