Fantastic; I needed a washer for a modern bath pop-up waste plug.. Visited 3 or 4 plumbers merchants without success, they could only offer me a full new bath waste kit which would need a plumber to fit! Smith and Low had the item to hand. The price was probably 50% of online price[hint: Smith and Low you can easily charge £2.99 for almost anything.. I owe you] It was the correct little rubber washer, and was fitted in 3 minutes.. After minor adjustment of pop-up movement, the bath is no longer leaking.. Thank you.