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If your machine is jumping arc or you just put in new brushes, use this Brush Seater & Commutator Cleaning Stone to help out! Mild abrasive for seating carbon brushes and cleaning commutators and slip rings Soft grain produces a scouring effect when held against commutator.
The stone is 5/8" x 1-1/8" x 4-3/4".
Call us with any questions 602-850-7399.