I did some Googling... several hits said the wrenches are titanium but they varied on the gold color. Some said the gold color was gold plating and some said it was titanium nitride. Most didn't mention the pliers at all but some made a point of pointing out that the pliers are plated steel, not titanium. I didn't see any mention of the rest of the kit. The bits are probably steel with titanium nitride, since that is readily available.