Nice quality of life addition to the concept 2. I typically roll my rower into the driveway and the turf wheels don’t get snagged on my pavers or slab edge.
These are pretty neat. They slide on the handles of captains of crush grippers or similar and have a set screw to lock them in. Lets you train a pinch grip with grippers you already have.
I got these for cable crunches but I quickly found they’re my favorite way to do face pulls. These are really well made and will serve me well for a long time.