Screw fixed., 2 no. multipurpose brackets and a 65 mm long fixing spike., 2 no. multipurpose brackets and 2 no. fixing spikes (65 and 160 mm long)., 3 no. multipurpose brackets and 2 no. fixing spikes (65 and 160 mm long)., 2 no. high performace (HP) brackets and a 328 mm long fixing spike with a 90° return angle.