"G10 steel handle with serrations" - last I checked, G10 isn't a steel. Also, although I haven't handled this knife in person, serrated probably isn't the most accurate thing to call the handle.
markgriThey mentioned the jimping earlier in the paragraph, so it obviously is not referring to that. Even if they were, "serrations" aren't exactly the best thing to call jimping either. What they seem to be referring to is the texturing of the G10 scales.