I bought these and the J-cup covers from Aperture. I use them on my Rogue SAML-24 safety arms and they fit firmly. I was less worried about the barbell hitting the ends of the safeties, and more worried about people hitting the end of the safeties. I got them in red so they stand out.

I use these exclusively on my pull-up bar - they offer more pull-up grip options. In my garage I don't have the ceiling height to use full size rings for pull-ups at this time. If you have the space to use full size rings - then those might offer a better value for you. Compared to other solutions to this same specific problem though, the price for the quarter rings isn't that bad. They just have a very specific use case.

I got this on sale to use on my Monster Lite. Landmines in general add a lot of versatility with a small footprint and price. I appreciate that this one was inexpensive but also had plastic liner to protect the barbell sleeve. It seems like several other brands don't offer that (at least not for 5/8 racks). I keep it out of the way with a magnetic hook from the hardware store.

I use these on my Monster Lite. The design lets me put 45s on my flat foot rack in a position that is lower than I could set the bolt-on pegs (due to the way the holes on the side line up. These were a good price and they hold weight (I usually store 4 45lb bumpers on each).

I have had these about a year and mainly use them for bench press. I am a big fan of these. I was looking for sandwich J-Cups that would fit on my Rogue Monster Lite rack and were also less expensive than the Rogue sandwich options. I think these were on sale and they seemed worth a shot. Seems like they have more of their surface covered in plastic compared to a lot of other designs. Features I like: - More narrow than standard J-Cups - Full plastic coverage on J-cup - Recessed bolts holding the plastic on - Able to lock in place with a mag pin - UHMW on the front and back of the interior (not common on 5/8 rack attachments) - good size "landing area" which i prefer for bench press Note: I got the PRX mag pins, which I use to lock these in place. I usually use Fringe mag pins but they were too long to work for this. I wasn't sure how they would hold up and I have roughed them up a little bit in the past year - but they have held up as well as my other J-Cups (Rogue monster lite basic and Ghost Rollers)