Titanium guard

It's not titanium at all, it's aluminum alloy, and not a particularly strong alloy at that.

If it was really titanium, it would be either made thinner or would be substantially heavier, and would be more expensive, since Ti is about 1.7 times heavier than aluminum, and considerably more costly.

IMHO, the "Titanium" name on these is simply bad translation and misrunderstanding of the name of european products called "Titan", meaning Large, as it is close to the 12cm maximum guard size.