Three models are available, each having the safety feature of clear 5mm abrasive resistant polycarbonate vision panels. The high volume production of models SGB and ST permits the frames to be injection moulded in orange glass reinforced nylon, whilst Model ST/1 employs a heavy duty die-cast aluminium frame.

All are of super strength construction to stand up to the most arduous conditions and are supplied complete with support rod to enable them to be easily installed on the cowls of any make of machine.