The C7P was based largely on the chassis of the Polish 7TP and was developed by the design bureau of Witold Jakusz of the PZInz company between 1931 and 1934. This made it's production cheaper. Production started in 1934 with an intial order for 350 although only 151 were completed before the outbreak of WWII. The C7P was also used to tow heavy artillery such as the 220mm wz.32 Skoda mortar. Another 10 were attached to tank units for towing immobilised tanks.