Bathroom Sink Drains and Pop-Up Stoppers: Buying Guide

Short answer

If your faucet has a lift rod hole behind the spout, buy a lift rod pop-up drain. If not, a push button (click-clack) pop-up is the simplest swap, with no linkage under the sink. Either way, buy the overflow version if your sink has an overflow hole and the no-overflow version if it does not. Nearly all bathroom drains use a 1-1/4 in tailpiece; the hole size varies, so measure it.

Bathroom sink drain types

A bathroom sink drain (a lavatory drain, in plumbing catalogs) does three jobs: it seals the hole in the bowl, it holds water when you close it, and it lets the overflow channel drain into the pipe. The styles differ in how you open and close the stopper (Signature Hardware has a good maker overview).

01Classic
Lift rod pop-up drain
Best for: faucets with a lift rod hole behind the spout

Control
Rod behind the faucet
Tailpiece
1-1/4 in
Under the sink
Pivot rod and clevis strap
- Pull up the rod to close the stopper, push it down to open
- Often sold with the faucet; also sold on its own as a replacement
- More parts under the sink, so a little more to adjust and a pivot nut that can drip
See lift rod pop-up drains Pop-up drains with overflow
02Easiest swap
Push button (click-clack) pop-up
Best for: replacing a worn drain without linkage under the sink

Control
Press the cap
Tailpiece
1-1/4 in
Under the sink
No linkage
- A spring cartridge inside the stopper holds it open or closed
- Sold in overflow and no-overflow versions
- Spring cartridges can wear; many are sold as replacement parts
See push button drains Without overflow
03Simple
Lift-and-turn drain
Best for: a plain knob you lift and twist to lock

Control
Knob on the stopper
Tailpiece
1-1/4 in
Under the sink
No linkage
- Lift the knob and turn it to hold the stopper open
- Few moving parts, but you touch the stopper in the water to use it
- Seen more often on tubs, but sink versions exist
See lift-and-turn drains
04Always open
Grid drain
Best for: sinks you never fill, such as vessel or powder room bowls

Control
None
Tailpiece
1-1/4 in
Holds water
No
- A fixed grate sits flush with the bowl
- Nothing to stick, adjust or pull out
- Cannot hold water unless you add a separate stopper
See grid drains

Grid drains get their own page: grid drain vs pop-up. Bowls that sit on top of the counter need a longer body, covered in vessel sink drains.

With or without overflow: get this right first

Look at the bowl just below the rim, usually under the faucet. A small hole or slot there is the overflow. It leads to a channel cast into the sink that empties into the drain body below the stopper.

Sink has an overflow hole: buy a drain whose body has slots or holes in the side, so overflow water can get into the pipe.
Sink has no overflow: buy a solid body drain. VIGO explains the reason: a slotted body in a sink with no overflow lets water leak out of the slots with the stopper closed, so the bowl will not hold water.

Sizes: tailpiece and hole

Measure	Typical	What to know
Tailpiece	1-1/4 in	Bathroom drains and their P-traps are 1-1/4 in, smaller than the 1-1/2 in kitchen size (HomeGuide).
Sink hole	About 1-1/4 to 1-3/4 in	No single standard. Hunker lists 1-1/4 in as most common, with some sinks at 1-1/2 or 1-5/8 in.
Sink thickness	Varies	Thick ceramic or stone needs a body with enough thread below the sink for the gasket and locknut.

The safe way to buy: pull the old drain, measure across the hole, and pick a drain whose listed hole range includes your number. The sink drain size guide walks through it.

Finish: match the faucet

The stopper cap and flange are the only drain parts you see, and they sit right below the faucet. A chrome drain under a matte black faucet looks like a mistake.

Faucet brands sell matching drains. If you know your faucet brand and finish name, searching both together is the easiest way to an exact match.
Common finishes are polished chrome, brushed nickel, matte black, brushed gold and oil-rubbed bronze. Finish names vary from brand to brand, so compare photos.
Body material: metal (usually brass) bodies are common on finished drains; plastic bodies cost less but can crack if the locknut is overtightened. Check the listing for what the body is made of.

See brushed nickel pop-up drains

What comes in the box

A full pop-up drain includes the stopper, flange, drain body, rubber gasket, locknut and a 1-1/4 in tailpiece. Lift rod versions add the lift rod, pivot rod and clevis strap. You also need plumber’s putty or silicone under the flange, and on stone sinks a stain-free putty or silicone. The bathroom drain replacement guide shows the order the parts go in.

Also useful

Plumber’s putty under the flange on most sinksFind it
Stain-free putty stone and cultured marbleFind it
Basin wrench for the faucet side, if you are changing bothFind it

If the drain you have just needs a fix

Most bathroom drain trouble is hair wrapped around the stopper, not a failed drain. Before you buy, try pulling the stopper and cleaning it. A stopper that will not stay up or down usually needs the pivot nut adjusted, covered in sink drain stoppers. A slow drain is covered in how to unclog a bathroom sink.

Questions people ask

What size is a bathroom sink drain?

The pipe under a bathroom sink drain (the tailpiece) is almost always 1-1/4 inches, and so is its P-trap. The hole in the sink itself has no single standard: 1-1/4 inches is common, but some sinks are 1-1/2 or 1-5/8 inches. Measure the hole and match the range printed on the drain box.

How do I know if I need a drain with or without overflow?

Look for a small hole near the top of the bowl, usually under the faucet. If it is there, buy a drain with overflow slots in the body. If the bowl has no such hole, buy a drain without overflow. Using a slotted drain in a sink with no overflow lets water escape through the slots when the stopper is closed.

What is the difference between a lift rod pop-up and a push button drain?

A lift rod pop-up is worked by a rod behind the faucet that connects to a pivot rod under the sink. A push button drain has a spring cartridge in the stopper itself: press the cap to close it and press again to open it. Push button drains have no linkage under the sink, so they are easier to install.

Do I have to buy the drain from the same brand as my faucet?

No. Most bathroom drains fit most sinks as long as the overflow type and hole size match. Faucet brands sell matching drains, which is the easy way to get an exact finish match, but any drain in the right size and finish will work.

Can I replace a lift rod drain with a push button drain?

Yes. Remove the old drain and its linkage, install the push button drain, and leave the lift rod hole on the faucet empty or cap it if your faucet came with a cap. Check that the replacement matches your overflow type.

Sources

Last reviewed October 12, 2026. Parts, sizes and listings change; check the product details before you buy, and follow the maker’s instructions.

Bathroom sink drains and pop-up stoppers