For 4 inside diameter or larger wells. Patented floating stack design for sand resistance and reduced sand locking. Corrosion resistant stainless steel pump, and motor housing.Precision molded impellers and diffusers. Includes built in check valve. PLEASE SEE VISIT MY STORE & SEE MY OTHER AUCTIONS. This item is in the category "Home & Garden\Home Improvement\Plumbing & Fixtures\Pumps & Water Filtration Systems\Pumps". The seller is "deadonsurplus" and is located in this country: US. This item can be shipped to United States.