This narrow and very strong belt with nominal top width of 3 mm to 11 mm transfers more power and achieves high speed ratios. PolyFlex® is suitable for very compact drives with very small pulleys and high rotational speeds. PolyFlex® performs flawlessly on machines and machine tools that must work powerfully and quickly in a confined space, such as on milling machines, lathe drives, woodworking and metalworking machinery, computer peripherals, small fans, etc.