This tank paper model is SD L3/35 (Carro Veloce CV-35), an Italian tankette (tracked armoured fighting vehicle) that saw combat before and during World War II, the papercraft was created by Break Even, and the finished model is about 7.2 cm long.
Although designated a light tank by the Italian Army, its turretless configuration, weight and firepower make it closer to contemporary tankettes. It was the most numerous Italian armored fighting vehicle and saw service almost everywhere the Italians fought in World War II but proved inadequate for modern warfare having too thin armor and weak armament of only machine guns. [Source: wiki]
You can download the papercraft model here: SD Italian L3/35 Small Tank Free Paper Model Download