Heavy duty steel construction with a durable black powder coat finish. Fits Discovery I and Discovery II. Permanent installation (it requires drilling). Surco products Inc. Is one of the premier automotive accessory manufacturers in the United States. Due to their in-house operation, they are able to carry a diversified line of automobile accessories. Surco controls the entire manufacturing process enabling them to make sure that the quality level is always high and up to Surco standards. For over 30 years in business, Surco has established high quality products and earned the trust of its customers.