The original bellows plunger, sorted by the drain it clearsQuestions: (805) 555-0164 · drains@master-plunger.com

Master Plunger bellows plungers

Master Plunger bellows plungers for every drain

Master Plunger bellows plungers push a set load of water into the drain on every stroke, from the 7.25-inch Mighty Tiny to the 10-cup MP100. Tell us where the clog is and you'll see which one fits your drain.

  • 7models in the range
  • 10 cupsthe most water one push moves
  • $11.99+starting price

Pick the room, then what the drain is doing. Each answer names the plungers that suit it, best fit first.

Inside a Master Plunger

Five parts that do the work

Bellows body

Bellows body

The folds close and spring back, so each stroke pushes water into the drain and then pulls it back. Rinse and shake them out after each use, since waste can sit between the folds.

Storage bucket

Storage bucket

The MP500 Kit and the MP1600 with tall bucket come with a bucket to stand the plunger in. Drips stay in the bucket, and you're not hunting for the plunger when the bowl is rising.

Air relief valve

Air relief valve

Air trapped in the bellows is what throws a full bowl over the rim. On the toilet models the valve lets that air out as you press, and on the MP500 you open it with a quarter turn of the handle.

Tri-level nozzle

Tri-level nozzle

The MP100 and MP500 end in a stepped tip that sits down in the drain opening. The maker says it gives a better seal in kitchen sinks and toilets.

Extended funnel nose

Extended funnel nose

The MP1600 has a long nose that bends 90 degrees into the outlet of standard and elongated bowls. It's built for 1.6-gallon low-flush toilets, where a flat cup slides around.

The range

Every Master Plunger model

One row per model. Color, bucket and pack size are picked on the model page.

MP100

Master Plunger 100

The big toilet plunger

  • 10 cups
  • Air relief valve
  • Tri-level nozzle
  • 2 options

from$15.49

4.1 out of 5 · 1,697 ratings

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MP500

Master Plunger 500 Kit

All-purpose plunger with a bucket

  • 8 cups
  • Air relief valve
  • Tri-level nozzle
  • 4 options

from$15.77

4.0 out of 5 · 1,743 ratings

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MP1600

Master Plunger 1600

For 1.6-gallon low-flush toilets

  • 8 cups
  • Air relief valve
  • Extended funnel nose
  • 2 options

from$15.99

4.0 out of 5 · 570 ratings

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MP200

Master Plunger 200

Wide-mouth plunger for tubs and floor drains

  • Cups not stated
  • Wide mouth
  • 1 option

$15.99

4.5 out of 5 · 173 ratings

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MTMP

Mighty Tiny

Pocket plunger for pop-up sink drains and RVs

  • 2¼ cups
  • Tiered mini bellows
  • 2 options

from$12.99

4.5 out of 5 · 1,733 ratings

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Compare the Plungers

In owners' words

What people say after the clog

Word for word, the critical ones first. Across the range, buyers have left 12,533 scores, counted once per model family.

3.0 out of 5

Too bulky for regular toilet clogs

I only bought this because the color matched my bathroom decor. It was a waste of money.There are far better, more efficient alternatives that all cost less. This thing may be good for deep water. Too bulky for regular toilet clogs.It’s big and the pleated part at the bottom can and does get toilet waste all in between it- yuk.The few times I had to use this, I was disappointed. Just buy a regular plunger, this is a waste.

NurseKim · August 13, 2023 · on the Master Plunger 100

1.0 out of 5

Definitely not effective, poor construction

This plunger is very hard stiff plastic. It does not work at all, as you cannot achieve any compression with it. I tossed it out and bought a different one.

lynn · May 26, 2026 · on the Master Plunger 100

1.0 out of 5

Would not clear the clog

This plunger did not work at all to clear the clog. I had to call the community maintenance guy to come take care of it. I'm guessing that it may have a crack in it where the air may be escaping.

Mburt · July 26, 2026 · on the Master Plunger 500 Kit

5.0 out of 5

Do yourself a favor...get this

This Master Plunger and it's accordian functionality works ever so much better and faster then the red rubber cup type with the wooden handled ones I grew up with. Definitely not going back to the old ones!

MO owes and owes · July 27, 2026 · on the Master Plunger 100

5.0 out of 5

Power to flush!

Master Plunger MP100-3. This plunger is like when your Mom was standing there making sure you cleaned your room; since buying this, we haven't had a single toilet clog! It's like insurance! But I did experiment with it, and decided that any clog would be no match for this thing. It is powerful and simple to use, and doesn't leave a black ring in the bowl. It's also lightweight and fun to look at. Good purchase!

J K · November 23, 2024 · on the Master Plunger 100

5.0 out of 5

works great

I bought this primarily to clean bathroom sink drains. It is far superior to the old style plungers. Used it on my toilet stool also and again did an amazing quick and easy job of it. The only thing I wish it had was a holder for it. so for now I just put it back in the bag and store it under a bathroom sink.

Old-always learning · December 4, 2023 · on the Master Plunger 100

About the range

Why Master Plunger is built around bellows

A plunger is the tool nobody thinks about until the water is at the rim. At that moment you want one that works on the first try. Master Plunger bellows plungers are shaped for one job: push water, not air, and push enough of it to move the clog.

A flat rubber cup traps a pocket of air, and air squeezes, so part of every push goes into the cup. Our bellows plungers fill with water, and pressing down sends that water into the drain in one solid push. Pull up and they draw it back, so you work the clog from both sides.

A black Master Plunger Shorty on a bathroom vanity

The lineup runs from the Mighty Tiny, 7.25 inches tall with 2 1/4 cups of water, to the Master Plunger 100 at 10 cups. In between sit the 4-cup Shorty and three 8-cup models for toilets. The wide-mouth MP200 stands apart, shaped for tubs, showers and floor drains.

Bigger is not always better. A 10-cup plunger in a bathroom sink sprays water out of the overflow before it clears anything, and a 2 1/4-cup plunger won't shift a wad of paper in a toilet. Pick by the drain first, then by the size of the clog.

A Master Plunger 100 seated in a toilet bowl

The part people ask about most is the air relief valve on the toilet models. Press slowly on the first stroke and the trapped air leaves through the valve instead of pushing bowl water onto your floor. On the MP500 a quarter turn of the handle opens it, and you close it again once the air is out.

Newer toilets use 1.6 gallons a flush or less, and many have a narrow or oval outlet. A flat cup rocks on that shape and leaks around the edge. The MP1600 answers it with a long funnel nose that bends down into the outlet.

A Mighty Tiny plunger working in a kitchen sink

Our plungers are hard plastic with no rubber rim. That's what lets the folds spring back, but it also means you have to seat them with care, and some owners find them stiff at first. If you want a soft cup that forgives a sloppy angle, a bellows plunger may not be the tool for you.

Most homes end up with two: a toilet model in the bathroom and a short one under the kitchen sink. That keeps the toilet plunger out of the kitchen, and it means the right size is already in the room when the water starts rising. If you only have space for one, start with the drain that gives you trouble most often.

A white Mighty Tiny over a bathroom sink drain

No hand plunger reaches a blocked sewer line, a toy stuck in the trap or a pipe full of roots. If water comes up in a second drain when you plunge, or three rounds of strokes change nothing, stop and call a plumber. And never plunge a drain that has chemical cleaner in it.

The Master Plunger range comes from G.T. Water Products, and the maker says the plungers are made in the USA. The stars on our 7 models come from 12,533 owner ratings in all. On each model page you'll find the cups, the drains it suits and the drains it doesn't.

A black Master Plunger 500 standing by a toilet

FAQ

Master Plunger questions

What does "cups of water displacement" mean?

It's the amount of water a bellows plunger moves on one full stroke. The Mighty Tiny moves 2 1/4 cups and the MP100 moves 10, so the bigger number means more water hitting the clog each time you push.

Why does water splash out when I plunge?

The bellows were full of air when you pushed. Press slowly on the first stroke so the air leaves through the valve, and check that the handle is screwed in firmly.

Do the plungers come with instructions?

On the MP100 the directions are printed on the rim of the bellows. They're small, so read them before the day you need them.

The bellows of a Mighty Tiny, seen from the cup side
Can I use the same plunger on the toilet and the sink?

You can, and the MP100 and MP500 have a nozzle shaped for both. Most people keep a separate short plunger for sinks, since nobody wants the toilet plunger in the kitchen.

Can I plunge after using a chemical drain cleaner?

No. Plunging throws water back up at you, and with caustic cleaner in it that water can burn skin and eyes. Tell a plumber what you poured in and let them open the line.

What if the plunger doesn't clear the clog?

Try two or three rounds of 15 to 20 strokes, checking the water level between rounds. If nothing moves, or water rises in another drain, the blockage is past a plunger's reach and it's time for a plumber.

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