Review on Sinyiol Stainless Aquarium Splitter Distributor by Sharon Mitchell

I bought this splitter to replace an old plastic 4 valve I had that was broken. Also i need 6 outlets to power 3 - 10 gallon tanks + 1 nearby 2.5 gallon quarantine tank This splitter works great with my air pump I have an air pump that is hooked up to sponge filters the valves are great and you can adjust how many bubbles you want to distribute in each tank.I like stainless steel.It's much better than the fragile plastic ones.It comes with 6 check valves.To be honest for a long time I couldn't understand what they were for were, there were no instructions with an explanation, I had to check the website.