The Master Plunger range

Every plunger in the Master Plunger range is a bellows plunger. The body folds like an accordion, fills with water, and pushes that water into the drain as you press down.

The toilet models carry an air relief valve that lets the air in the bellows escape as you press, so a full bowl doesn't spill over the rim. On the MP100 the maker calls it automatic. On the MP500 you open it with a quarter turn of the handle.

The MP100 and MP500 end in a tri-level nozzle, a stepped tip the maker says seals better in toilets and kitchen sinks. The MP1600 has an extended funnel nose instead. It bends 90 degrees to reach into the outlet of 1.6-gallon low-flush bowls.

For sinks, tubs and floor drains, the lineup gets smaller and wider. The Shorty moves 4 cups and stands 13 inches tall. The Mighty Tiny fits under a bathroom faucet and into an RV cabinet, and the MP200 has a wide mouth for tubs and floor drains.

The MP500 Kit and the MP1600 with tall bucket come with a bucket to stand the plunger in. The MP500 & Brush Set puts the plunger and a toilet brush in one joined holder.

What these plungers don't do: they don't reach a blocked main line, and their hard plastic lips have no rubber rim to forgive a crooked angle. The maker is G.T. Water Products, and it says the plungers are made in the USA.