This is the ROCKDock™ Reloading Bench Docking Mount System. I like the idea here.
https://www.patmarlins.com/
So, if you have more than one press or limited bench space, you can use this. You put a set on shelf, too, so you can store all your presses on that shelf, freeing up bench space.
I address this problem by using C clamps to clamp my press to my bench. This product looks pretty slick, so put it here. I found it in a little ad in the upper left corner of the back pages of the current issue of Handloader.
CDFingers
New reloading product: a deck
1Crazy cat peekin' through a lace bandana
like a one-eyed Cheshire, like a diamond-eyed Jack
like a one-eyed Cheshire, like a diamond-eyed Jack