Michelin Tube CH. B4 Airstop 27.5"x1.95"-2.35" F/V 40mm Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Michelin Tube CH. B4 Airstop 27.5"x1.95"-2.35" F/V 40mm Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...