This Miller replacement grader blade is used on the rear outriggers of allCentury Heavy Duty Integrated Wreckers. This is the blade used on CenturyWrecker Models: 4024, 5130, 5230, 7035, and 9055. 17.25″ Long 4.75″ Center to center bolt holes Includes 4 bolts for installation For Complete Set of (2) blades use part #124002401