Magnetic sump plug

Anyone found a magnetic sump plug to use with their WR²? I looked in the microfiche but it didn't give the size of the bolt. I may have to check when I drop the oil at the weekend.

http://www.rivasouth.net/pages/catalogs/detail/26/200/400/20628/1/0/0/1/4/49/5345/62141/aluminum-drain-plug-with-magnet.aspx

Thanks, that's the idea.
Anyone nervous about the ally sump bolt - service manual says 20Nm torque.

http://www.mandp.co.uk/productinfo/503701/Spares/Magnetic-Oil-Drain-Plugs/Economy/M12x1.5

for uk people. It's only 15mm rather than 16mm. Not sure if that's a problem. cheaper. Doesn't say if it's a steel or ally bolt.

I would feel more comfortable with an alloy bolt rather than a steel one. That way the alloy bolt is less likely to remove case threads in the event that the two parts get a little too friendly. Bolts are cheaper to replace than cases.

Also, 20Nm should be lots. If I recall, the drain bolt has a crush washer like most others do. Therefore, it only needs to be tightened enough to form a seal.