Danze DA507173 Ceramic Disc Cartridge for Roman Tub, Hot Side Replacement ceramic disc cartridge Hot side only for Danze roman tub faucets Fits Danze faucets: D300571, D300702, D301571, D301575, D301675, D302521, D302555, D302655, D303554, D304566, D304568, D305558, D306557, D307745