SPECTRA 1 & 1/2 BOWL SINK The Spectra stainless steel sink range features a distinctive PVD colour coating and universal installation across all models. Double bowl sinks include a curved bridge dividing the two bowls. This curved bridge acts as an overflow to safeguard against accidental over filling eliminating the need for an overflow. Coloured bowl protector(s), a coloured stainless steel drainer tray and bamboo chopping board are included with every Spectra sink.