Merida Mtb Cable Guide Head Tube 1 X 4mm & 1 X 2.6mm - Smart Entry Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Merida Mtb Cable Guide Head Tube 1 X 4mm & 1 X 2.6mm - Smart Entry Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...