Hexagonal-section GUFERO® engine belts also known as double-sided engine belts, atypical engine belts, non-standard engine belts, double engine belts, etc. These engine belts are used in more complex drives with multiple engine belt pulleys where it is necessary to change the direction of rotation. Double engine belts are used for special applications in industrial equipment. The main advantages of hexagonal engine belts definitely include their long service life and low maintenance costs. The temperature resistance of double engine belts is from -40 °C to +70 °C.