Product information "4 Koller flatline jets instead of 4 plastic jets [Upgrade]"
UPGRADE: 4 pcs. massage flat jets (Flatline)
Replace the standard side jets to the flat and high quality side massage flat jets by Koller ( Austria). Flat jets are almost flush with the inner surface of the whirlpool ( flat line). High quality jet body of the flat jets: from a solid block of brass milled then chromed.