A few years ago I bought a very good ground spike for a rotary clothes
line. The 'ground' bit of the spike was like a huge screw and the whole
thing came with a torsion bar for screwing it into the soil. It was a
good bit of kit and far superior to the 'hammer it into the ground' variety.
I've recently moved house and had to leave the spike behind and I want
to find an identical model but a prolonged search of Google plus all the
usual suspects (Screwfix, machineMart etc) has drawn a blank.
Does anyone know a source?

T.I.A.