'C' section stud, 125 x 50 x 1.2 mm., 'C' section stud, 125 x 60 x 1.2 mm., 'C' section stud, 125 x 70 x 1.2 mm., 'C' section stud, 125 x 70 x 1.6 mm., 'C' section stud, 125 x 70 x 2.0 mm., 'U' section track, 129 x 55 x 1.2 mm., 'U' section track, 129 x 68 x 1.8 mm., 'U' section track, 129 x 68 x 2.0 mm.