Can't seem to find this tool....

I've seen a few videos of a nail-puller.......it grabs the head of the nail and then uses a slide-hammer action to pull the nail out of the wood.  But I can't seem to find one from perusing typical internet sales outlets.  I need this for a lot of nail-pulling from corrugated metal siding where I would like to preserve, as much as possible, the integrity and contours of the metal.  The "Crescent" tool seems to be more of the lever kind of puller, right?  Can't recall if Dale H. or someone else doing demolition and reconstruction had demonstrated the sliding version here?.....Any help would be appreciated.    Thanks!

I have seen vice grips with a slide hammer. Both as a DIY welded project and for sale. The for sale ones were spotlighted on one of those car restoration shows on tv. I have no idea of the brand.

Type "slammer hammer" into Amazon.  I couldnt get a link to post it here

Wranglerstar did a video/test of these things a little while back.

https://www.youtube.com/watch?v=Wtpf4LNI46A

Thanks, Wayne!.....Slammer Hammer is the item I was looking for.   May actually end up purchasing this and the Crescent based on their attested usefulness.

Great tool. Used one a lot as a youngster.
We took apart a wood frame greenhouse nail by nail to reassemble elsewhere without damaging the glass panes or the frame.
The slide is meant to drive one hook below the level of the nail head.