Just an update on the bolt tool.

Repco Indooroopilly didn't have one in stock but could supply by end of day for a $10 premium.
Super Cheap Taringa couldn't find them on their stock list though they knew of it
Trade Tools Coopers Plains were out of stock for the individual ½" drive bits, and the multi size bits but could supply a hex/torx/spline drive kit with ½ & ¼ adaptors.

The current trade name for the drive appears to be just plain spline drive, no multi.