Defense Holdings, Inc.® has extended the use of their revolutionary, patented HiPerCon® Brand Metal Fiber Brush (MFB) technology to the grounding of the shafts of electric motors. DHi’s MFB shaft grounding brush is a cost effective means of preventing bearing damage that often is the result stray currents induced in the shafts of electric motors. Without shaft grounding devices current can pass through the motor bearings and end up etching the races and causing premature failure.