Good product but not compatible with Loc-Line branded product. It will work, but you need to be sure you don't need to connect to an existing loc-line.
Do not attempt to use them with Loc-Line components. They are not standard size. Parts are slightly smaller than Loc-Line parts and are not interchangeable. If you intend to use them alone, they should work just fine.
I can't comment on how well the product works given its 'intended' use as a coolant tube. As for me, I bought them for an art project and they do the job very well. These interconnected hoses have many other uses and are just fun to play with!