Ivanko Colored Rubber Encased EZ-Lift Yellow Olympic Plates With Holes - 25 lb pair for use on Olympic bars No recycled rubber used. Will not crack, chip, flake, peel or tear. Will not dent equipment. Will not damage floors. Reduces noise. Never needs painting, will not rust Excellent proportions. Rubber permanently molded over cast iron. Colors hold consistency from one production run to the next