HTD drive belt 20mm wide 8mm tooth in 800lenghts - High Performance. The polychloroprene compound is reinforced with aramid fibres, the tension cords are reinforced pairs of counter twisted glass fibres. The teeth consist of a new compound which is also reinforced with aramid fibres. The specially developed polyamide fabric that covers the teeth also protects the teeth from early wear and tear and helps prevent tooth shear.