There are 4 kinds of HiTD Belts:
3M
5M
8M
14M
To complete designation you have to know number of teeth pitch lenght and belt width (you add it in mm)
Ordering Examples:
PHG 180-5M (BELT MARKING) 15 (BELT WIDTH)
PHG 60-3M (BELT MARKING) 9 (BELT WIDTH)
PHG 384-8M (BELT MARKING) 20 (BELT WIDTH)