|The MGA With An Attitude
Octagonal Wrench(s) for Rear Hub Nut, page-3 -- TS-106B
Here's a slick idea. It may not say in their ad, but the flange on this tool allows it to be held securely in place by the hub studs (with nuts) while you're cranking up the torque.
Made in the UK. Brown and Gammons Ltd part number: GAC1500BG
Seen on eBay November 2017. For as long as the link may last see here:
Or on their web site: