So I’ve recently been rebuilding my demolished Bionicle collection, and noticed something odd. The socket piece, or hand, has two versions. One with a dent on both sides, and one with no dents.
I may be wrong here, but I want to say that dent is a side effect from the injection mold. Something tells me that’s not correct though. Perhaps when I have a chance I can check out my sets and figure out what parts go with what year in terms of that dent.
If you’re asking about masks, I think all of the reboot masks have them. Otherwise, I think all of the hand/connector pieces from G1 would have had them. That’s how it’s been in my experience, anyways. Not sure what’s up with yours.
The ones on the right have them, the ones on the left do not. I’ve been looking at many of them, and I suspect that the pre-2004 sets have the dent whilst the post-2004 sets don’t. Not sure though, so if anyone knows for sure, please tell.