Magic Optical Crystal CRY123 CRY128 CRY188 5¼”x 13” 3½”x 8¼” 5½”x 12¾” CRY187 CRY756 3½”x 10½” 3”x 7½” CRY179 CRY131 2¼”x 8¼” 7”x 2¾” CRY178 3 2¼”x 7½”