The vehicle was designed to be equipped with 50mm armour all-round, with 60mm thick armor plates on the front part of the body having a 60 degree vertical inclination on the top and 45 degrees vertical inclination at the bottom. Driving wheels of the PzKpfw III were used with the addition of reinforced output shafts, along with 540mm wide symmetrical tracks with a central ridge. The chassis had six semi-detached rollers 660mm in diameter on the leaf springs.