Stone Pro 5x Powder - Marble Polishing Powder - 3 Pound High quality 5X for the restoration professional Excellent for restoration and maintenance of limestone, travertine, marble, onyx and cement based terrazzo. Use as a final polish or a maintenance polish Added shellac increases polish and helps reduce etching the surrounding areas Fast results Use StonePro Deep Clean Gel to neutralize after use THIS PRODUCT IS FOR USE, HANDLING, STORAGE AND DISPOSAL BY QUALIFIED PROFESSIONALS ONLY!