... brush holder,brush holder for automobile,car brush holder,VALEO 81034. 1.small spark,low noise 2.long use life,safe. VALEO brush holder,brush holder for automobile,car brush holder ... 4 psi)Brush Holder Quartering:To insure that the best machine electrical neutral can be achieved, the brush holders ... optimum machine performance, the brush must be set at the machine electrical neutral. If the unit ...