They were mass produced humanoid battle units manufactured by Skynet from the original designs and test models constructed by Cyberdyne Systems Corporation. Standing almost six feet tall and weighing almost 800 lbs, the T-600's endoskeleton is very powerful and can lift objects almost five times its own weight or punch through concrete and metal with no damage to its reinforced servos. The T-600 Series is capable of running at a constant speed of almost 60 km/h, with short bursts of up to 75 km/h. However, these bursts of speed tax the servos and the joints of the leg assemblies. Due to the lack of technological advancement at the time of their conception and the nature of Skynet's logic, the T-600 Series is fabricated with a smooth latex rubber "skin" to hide its mechanics.