Before I purchased this I used to use a 900g empty Olive glass jar which was not ideal.
This is high quality 304 steel so it doesn't rust, with a secure riveted handle and fine mesh strainer so no solids.
I use it to strain all used oil which I only use once, to reduce carcinogen (every time you use it, the molecules break down)
When it's full, I use cooking oil solidifier so I can dispose of it in the household waste and then either put in the dishwasher or kitchen sink.
If you were doing deep fat frying you could use it to strain the oil after every use, however I would use oil filter papers (bigger versions of coffee filter papers) to catch the smaller particulates?