MacGregor Magnetic Super Base: * Little League-approved * Bases release when they are overcome by excessive force from a short slide * 3 different plate sizes bolt to the bottom of the base pan to adjust the holding strength of the base to the anchor * Base cover has a ribbed surface design to reduce the risk of slipping * Rubber cover and steel stanchion pan for excellent durability * Regulation size * Model# BBLLRIF9 * 1-year manufacturer warranty