Can anyone advise why I can't seem to purchase 1 and 3/8th inch magnesium shaft anodes, when you can quite easily find them in zinc. If someone knows where I can get them it would be a big help, coz I'm struggling!
Have a look at http://www.mgduff.co.uk/Leisure/Magn/magn.html
They do inch and 1/4 and inch and 1/2. Give them a shout, if they don't do inch and 3/8 as standard they may well be able to make them up for you.