Product Description Why iSpring Located in Alpharetta, Georgia for over a decade, iSpring water systems LLC is a family owned company specializing in reverse osmosis water filtration systems. Our products include residential and commercial reverse osmosis (ro) systems, whole house water systems, Ultrafiltration systems, shower, faucet, and counter top filters, filter cartridges and housings, ro coolers, and kitchen faucets and fittings. Our aim is to make high quality drinking water accessible for all households. With affordable pricing, solid quality, prompt delivery, and top notch customer service, we hope to assist in bringing you great water for years to come. From the Manufacturer 10 Micron high-quality NSF certified 10" x 2.5" Sediment filter cartridges) Product Highlights - Individually wrapped, packed in 50 pcs per carton - Removes dust, particles, and rust - Good for water filters and aquariums. Why Purchase From us - Honest seller, more than 1500 positive feedbacks on eBay - Free tech support before and after sale - Ship from Atlanta warehouse daily. Only 2-day transit time for most states in Eastern Time zone and part of Central time zone (including Texas) We also carry many other home filter systems. Please check our Amazon store for other items.