Commstones should be twice as long as the width of the longest flat spot and as long as will work freely between adjacent brush sets.1/8 in X 3/8 in X 6 in, Grade Ec, Commstone, Pencil Type When compared to turning tools commstones are easier to use, more time effective, and remove less copper..
1-1/4 in X 3/4 in X 1/2 in, Grade Ep Loose Stone, Commstone, Small Motor Combination When compared to turning tools commstones are easier to use, more time effective, and remove less copper..
Brush Seater Holder, 1/2 in X 1/2 in X 15 in Holder helps keep fingers away from rotating equipment, and the risk of possible shock is reduced because it is non-conductive.Brush seaters sold separately..