MarsĀ® is pleased to offer our dual rated V-belts. These belts are a combination of the classical multiple belt and the FHP belt, allowing the wholesaler and contractor to consolidate inventory. There is no need to stock both the FHP and multiple belts when you use the MarsĀ® dual brand V-belts. These unimatch belts are the same size and type and will measure within the RMA matching limits.