This is the manual gear box drain plug. Our engine oil drain plug does not have a magnet, would be good if you could find one that fits.
http://www.camskill.co.uk/products.php?plid=m22b679s1399p10314
If you can't find one in OZ these are a good price and I can't see postage being to expensive.
I got one of the alloy ones off ebay. Seems good but will only use it a couple of times and then get a new one as they are cheap.make sure you get a steel one,
not a cheap shit alloy one,
the thread will just get ripped of after a couple of use's