Profile: Kirkwood Holding Inc. is a producer of commutators, slip rings, carbon commutators and Cortemr springs for commercial, automotive and industrial use. We are an ISO 9001 certified company. Industrial commutators have extremely versatile and durable construction that includes wedge shaped copper bars made from two grades of silver-bearing industrial copper, combined with mica. They are used for large industrial motors in steel and paper mills, plant conveyor systems and elevators to powerful, mid-sized motors in diesel trucks, transit cars and power tools. Carbon commutator is used in automotive fuel pumps, & can also be used for other applications. It is resistant to aggressive fuels which attack copper commutator, it reduces draw on the vehicle's electrical system, and also reduces radio frequency interference(EMI).