Henschel was authorized to carry on the development of VK3001 in September of 1938, and has made 4 chassises during the period from March of 1941 to October, among them two were repacked into the heavy-duty anti-tank gun and attacked and wipe out the car at the beginning of 1942, install antitank gun that 128 mm. of antiaircraft guns refitted. 128mmSFL/61 is used in in the east line fighting , one of them was captured in 1943, the photo of another one showed that there are 22 combat successes in it. Hull length: 9.7m Width: 3.16m Height: 2.7m Weight: 35.0tons Craw:5 Engine: Maybach HL116 Road speed: 25km/h Armament: 128mm gun*1 MG34 machine gun*1