Göldo Tuneomatic Göldo Roller bridge nickel HW05N. Especially in combination with tremolo systems, a roller bridge can be great choice, as it significantly reduces the risk of possible detuning. The göldo HW05N roller bridge comes in a classic vintage design, and the string saddles are provided with small brass rollers over which the strings run. The knurled washers for height adjustment are fixed to the M4 bolts.