You have to be kidding right?
Did you even BOTHER searching this site for HPC? They are mentioned more times tha just about any other picks except for the SouthOrd.
SouthOrd are popular because they are carried by so many distributors over the internet.
HPC are perhaps the most recognized of professional lock tools in the world.
The set you have identified is the "Tyro" or PIP-15 pick set. Consisting of 6 picks, 2 tension tools, and 1 broken key extractor.
Of the picks, the 3/4 rake, the medium diamond and the medium hook are riveted steel handles. There is a plain medium diamond, and a plain double ball. The other pick is a slender double ended pick with a "w" rake on one end, and a small diamond on the other.
The tension tools are a small and medium twist flex in medium tension steel. The key extractor is plain handled.
All picks are made of blued spring steel, and the handled picks have polished stainless handles. The case is of course genuine leather with a velour lining.
Romstar