Interchange 40255A, Net Weight (lbs) 4.20 Length 6.25 Width 6.25 Height 1.00 Feature description This bumper washer is 6-1/4 inches in diameter and has an overall thickness of 1 inch. Where the bumper washer meets the head of the disc harrow axle, the washer is 1/2 inch thick. This washer fits a 1 inch axle only. Brand AgSmart Make Type Model Utility Disc Disc Harrow Multiple