Sweep Racing have announce a new addition to their grease line-up. This copper grease contain actual copper and is used for special applications in the R/C community. Once used, it is water-resistant and won’t fly off. It is also resistant to high heat and pressure, keeping strong against other chemicals it may come in contact with. Use Sweep copper grease wherever you need lubrication that stays in spinning parts, differential joints, servo savers and hinge pins.