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Here is the info listed on the Amazon product listing:

Drain King 186 Unclogs Bathroom Sinks, Showers, and Swimming Pool Drains, 1.5 to 3 Inch

About this item
Made in U.S.A with high quality material
Drain King is the original water-powered drain cleaner to ever enter the market
Our Drain Kings feature a water pulsating valve to unclog blocked drains quickly, no hassle
Clears slow and clogged drains with water power in your bathroom sink, kitchen sink, and shower
Important Tips: store in cool dark place, do not use with hot water. Minimum pressure to inflate is 40 psi up to a maximum of 80 psi​
Great for cleaning kitchen sink
Great for cleaning bathtub and shower

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