THIS KIT IS PERFECT FOR POLISHING ANY TYPE OF ALUMINUM, INCLUDING BILLET. THE MOST POPULAR APPLICATIONS FOR THIS KIT ARE ALUMINUM AND BILLET RIMS AND ACCESSORIES ON BIKES AND CARS. FOR USE WITH ANY STANDARD ELECTRIC DRILL. THE KIT INCLUDES: 4 OZ. BARS OF BLACK EMERY, BROWN TRIPOLI AND WHITE DIAMOND POLISHING COMPOUNDS, MOUNTED TAPERED BUFF, MOUNTED CYLINDER BUFF, MOUNTED 3" MUSHROOM BUFF, MOUNTED 2 1/2" AND 4" SPIRAL SEWN BUFFS, MOUNTED 3" LOOSE COTTON BUFF, 5 ASSORTED FELT CONES, INSTRUCTIONS AND COMPOUND CHART.