Drain Opener, 1" to 2" SizeMfr #: 501 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