I was looking for a filter for my kitchen sink, so that small waste passes in the evacuation ... Well I was served. No problem delivery, fast and well packaged. The grid is so fine it lets nothing pass. A priori rather strong, slightly flexible.
By cons, once the waste is trapped in it, it can be a bit of a chore to clean (it should be flushed to remove the finest and rinsed these wastes eventually pass ... in the flue).