For Sinks WITHOUT built in overflow in the side - Some Porcelain Sinks we sell have the overflow built in AND ALL Metal sinks we selll, NO Glass and NO Stone .......... This is a full system which gives you all parts to connect to the wall including the drain head, neck pipe and Full Trap. All of the parts are plated in your chosen finish, so this drain finished and installed is PRETTY from the drain cap all the way to the wall.
B - Brushed Nickel Full Drain Assembly - 1 1/2" pop-up drain WITH overflow and large cap - P
B - Chrome Drain Assembly with Trap for Vessel Sink W/ overflow hole in Side like Porcelain Sink P