Black Rhino Overland Matte Black 6-Lug Wheel; 18x9.5; 6mm Offset - This wheel's elegant design will certainly enhance your vehicle's aesthetic, complementing its luxury and performance. The unique styling of this wheel makes it an ideal choice for a standout quality of your ride, reflecting the premium quality associated with the Black Rhino brand. The 18x9.5 Black Rhino Overland Matte Black 6-Lug Wheel is completed in a high-quality matte black finish for an aggressive appearance that will make others green with envy. For added protection and good looks, a clear coat is added. One-Piece Cast Aluminum Construction. This wheel is manufactured using gravity casting. Gravity casting is the process of pouring a molten aluminum alloy into a wheel mold or form utilizing the earth's own gravity to help fill the mold. The result is a strong, durable wheel that has the same good looks as a more expensive wheel, at a fraction of the price. Application.