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A method and brush kit for cleaning and improving the roughness average of aluminum or aluminum coated valve cylinders and other open or blind bores in virtually any type of mechanical device by removing burrs and embedded particles within such cylinders and bores wherein the method provides a kit o

A method and brush kit for cleaning and improving the roughness average of aluminum or aluminum coated valve cylinders and other open or blind bores in virtually any type of mechanical device by removing burrs and embedded particles within such cylinders and bores wherein the method provides a kit of a predetermined number of cylindrical brushes having metallic or nylon strands that are coated or impregnated with an aluminum oxide abrasive material. The method is particularly adapted for use by technicians in the automotive, marine, farm, aircraft and the like repair industries for treating transmission valve bores or cylinders and other open or blind bores and the like.

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1. A kit for polishing bores and cylinders in mechanical devices comprising; a container housing defining an enclosure, a plurality of cylindrical brushes removably carried within the container housing, each brush including a bristle head portion of a substantially uniform diameter formed of bristle

1. A kit for polishing bores and cylinders in mechanical devices comprising; a container housing defining an enclosure, a plurality of cylindrical brushes removably carried within the container housing, each brush including a bristle head portion of a substantially uniform diameter formed of bristles coated and/or embedded with an abrasive aluminum oxide material and a diameter of each brush differing from a diameter of each of the other of the plurality of brushes, each bristle head portion being effective for use to polish bores having diameters within a predetermined range of diameters and each of the brushes having a bristle free stem. 2. The kit of claim 1 wherein each brush has a bristle head portion diameter in a size within a range of 0.250 inch to 2.0 inches. 3. The kit of claim 2 including four brushes wherein the brushes have bristle head portion diameters of 0.375 inch, 0.500 inch, 0.625 inch and 1.00 inch, respectively. 4. The kit of claim 3 wherein the bristle head portions have a length not exceeding 2.0 inches. 5. The kit of claim 4 wherein the bristle free stems have a length not exceeding 8.0 inches. 6. The kit of claim 5 wherein the bristles are formed of material selected from a group of materials consisting of a metal and a plastic. 7. The kit of claim 1 wherein the bristles are spirally arranged. 8. A kit for polishing aluminum valve bores of a vehicle transmission comprising; a container housing defining an enclosure, a plurality of cylindrical brushes removably carried within the container housing, each brush including a bristle head portion of a substantially uniform diameter formed of bristles coated and/or embedded with an abrasive aluminum oxide material and being of a diameter that differs from each of the other of the plurality of brushes, each bristle head portion being effective for use to polish bores having diameters within a predetermined range of diameters and each of the brushes having a bristle free stem. 9. The kit of claim 8 wherein each brush has a bristle head portion has a diameter in a size within a range of from 0.250 inch to 2.0 inches. 10. The kit of claim 8 including four brushes wherein the brushes have bristle head portion diameters of 0.375 inch, 0.500 inch, 0.625 inch and 1.00 inch, respectively. 11. The kit of claim 10 wherein the bristle head portions do not exceed 2.0 inches in length. 12. The kit of claim 11 wherein the bristle free stems have a length not exceeding 8.0 inches. 13. The kit of claim 8 wherein the bristles are spirally arranged.