Hi. It depends on the diameter of the drain hole on the sink. If the diameter is about 1.5" and the sink has an overflow then you can find the drain at the following link, [https://www.houzz.com/products/bathroom-sink-and-faucet-parts-prbr1-br~t_14957~a_10-29046746[(https://www.houzz.com/products/bathroom-sink-and-faucet-parts-prbr1-br~t_14957~a_10-29046746)

If the diameter is about 1.75 inches with overflow. You can find the drain at this link, https://www.houzz.com/products/lavatory-vessel-sink-drain-stopper-with-overflow-brushed-nickel-1625-prvw-vr~46188977