Alf,
Yes it is the extra thick blade and chipbreaker set which goes straight into Stanley & Record etc.
Blade 3.6mm thick and C/B 3mm thick. This works because of tabs attached to C/B slot. (Not a new idea).
Some throat filing likely.
A2 blade, slightly hardened C/B all very nicely finished and easy to prepare. Not cheap.
Rob C is involved in the production and promotion. I got roped in on the promotion.
Anyway, I see these as being of great interest to those who do not wish to get involved in yoke lengthening, but want a really thick blade.
Best wishes,
David