Ridgid® 1 gal Nu-Clear Thread Cutting Oil is free from chlorine, halogens, PCBs and other heavy metals that cools thread as well as pipe during operation. It is easy to wash that cleans off concrete, clothing and piping with water and it is biodegradable. Nuclear oil has low odor and anti-mist formulation that reduces thread torque. Thread quality can be improved to increase the metal removal operation. It is characterized by a viscosity that works under -20 deg Fand increases the life of the oil.