On the one hand, it's a traditional magnet with a north and south pole that attract each other, the way physics intended.
On the other hand, someone's finally invented a magnetic monopole because having two poles involved is... y'know.

On the gripping hand, it's vendor auto-translation gone wrong. I mean, the same seller offers "Cervical Massagers" that you wear on your shoulders - while I'm not a doctor, I'm pretty sure that's not where the cervix is. Also, "meat color" yoga socks and the "street dance level along the hat" baseball hat.

To be fair the neck and shoulders do house the cervical spine and we ARE meat.

In regards to the gripping hand, whose hand and what is it gripping? Just, um asking for a friend.

Yes yes, I know - I try not to let pesky things like facts get in the way of my snark. 'Flesh color' (like the old band-aids) is what they were probably going for. By way of apology, please accept this cartoon biscuit swimming ring and a small fish plate. All praise to the Almighty skateboard wheel.

The gripping hand is from a 70s/90s sci-fi book series featuring aliens with a third arm. I... don't really recommend it, but the idiom is sometimes useful.

Ah, Jerry Pournelle and Larry Niven. I never liked their stuff. I rejected the fiction before I learned that they were not particularly appealing human beings from their writing in magazines like I think Omni.

It's sad to me that I was turned off sci-fi (sorry SF not sci-fi. That was a raging argument long ago) by a certain type of white guy that I did not discover some of the better writers I have since read about like Ursula K. Le Guin.

Someday I may try to take another chance on the genre.

I read a ton of Niven and a little Pournelle when I was 13 or 14 and can't stand them now.

Maybe the 'heterosexual' part is to attract Republicans? You can never be sure how far the gays are going to go to try and influence your kids, after all.