5 in X 7 in X 3 in, Commstone, Grade P With Double Saw Handle Our Commstones come in 6 grits for commutator or brass/copper slip rings: EC EX tra Coarse-36 Grit, C Coarse-46 Grit, M Medium-90 Grit, F Fine-120 Grit, P Polishing-220 Grit, EP EX tra Polish-320 GritWe also have 3 grits for cast iron and steel slip rings: SRC Coarse-36S Grit, SRM Medium-60S Grit, SRF Finish-90S GritCommutator stones are used for grinding commutators and slip rings into concentricity for maintenance and repair.
5x the length for extra adjustability and a snug hold.5-inch, (6) 12-inch x 2-inch, and (3) 18-inch x 2-inch elastic cinch straps.Includes: (3) 9-inch x 1.