I love these carabiner band pegs. I have used them for just about everything, including 1. hanging a pulley system from various parts of my power rack; 2. using to store belts, bands, and other items; 3. mounting a landmine attachment (after removing the carabiner) from various points on my squat rack; and 4. attaching band pegs.
If I had one recommendation, I wish Bells of Steel sent them out with the 5/8" to 1" collar with the set screw that they send out with their landmine attachment. I picked up a few extra from the local hardware store, and they make these band begs even more useful by allowing me to secure them from my rack at a distance I find useful. I have used these band pegs in a 3x3 rack with a pulley holding approximately 200 pounds while performing lat pulldowns and rows, and I have seen zero bend even though the band peg sticks out 5 to 6 inches from the upright.
Since these mount nearly flush, I appreciate that there is limited risk of bumping them with my bar or plates when using my squat rack, so I can leave them in the rack all the time. I can't wait for Bells of Steel to get them back in stock. I will definitely purchase an extra pair or two.