The cheap Amazon kit I was cursed with looks identical to https://www.amazon.com/Syntus-Precision-Screwdriver-Electron.... The product is advertised as S2 tool steel, but I think this is a lie since reviews complain of soft steel, eg. "my T6 stripped right away with no resistance" and "I don’t have much use for either set".

I think the Phillips tips are both too soft, and misshapen and too tapered so they cam out easily (often stripping the steel in the process) rather than locking solidly onto the screw socket. I do not see any Pozidriv bits with diagonal ridges in this kit, though some older screwdriver kits I have contain them.