Kit. Prototype data: Tandem roller type BW 170 AD, 4 cylinder Cummins diesel engine 4B 3.3, water-cooled, 53 kW/80 HP, weight 8.0 t, max. operating weight 9.5 t.L 5.0 x W 2.4 x H 3.8 cm Level of difficulty: 2 (advanced)