Professional Quality, 4.5″ (115mm) Silicon Carbide Antiquing Brushes provide a Textured, “Leathered” Surface Finish on Marble, Limestone, Travertine and other softer Calcite Stones. Flexible and Durable Filaments Provide Fast, Efficient Antiquing with Increased Longevity.Dual Purpose 5/8”-11 Threaded and Snail Lock Arbor Provide Added Utility.