28.1 semi rigid 28.1 semi rigid 28.3 semi rigid 28.3 semi rigid 28.7 semi rigid 28.7 semi rigid 28.11 semi rigid 28.11 semi rigid 28.13 SEMI RIGID 28.13 SEMI RIGID 28.19 semi rigid 28.19 semi rigid 28.37 semi rigid 28.37 semi rigid 28.61 semi rigid 28.61 semi rigid