User blog comment:SomeoneYouUsedToKnow/SYUTK's V5E6 -Known By It's KRAAAW - Impressions/Recap/@comment-25396609-20171122060451/@comment-4010415-20171122063728

Ahh, I see. I'm viewing the big blades as each being segmented into two. The small blade portion seems to probably telescope into the big blade portion, and the big blade can move forward and back some more.