ERNST Mfg 6014M RD + 6015M BK Holds 40 Wrenchs Ea. Magnetic Rail Organizers Magnetic strip on bottom of rails! (Only magnetic bottom, rails are ABS Plastic) Graduated teeth provide maximum wrench storage -- More tools per square inch than the competition --Trims easily for a custom fit More tools per square inch than the competition -- Dimensions: 17" x 2" x 2" (L x W x H), commodates wrenches up to 1" APT / Ernst Red / Black -- YES - You get both 1 Red + 1 Black Set (each set is 4 rails) Fuel and solvent resistant -- Eco-friendly recycled products -- American Engineered and Made in the USA