This is a set up using industrial saftey pins . These are readily available in a variety of sizes from outfits like TSC Stores . I use them for pouches where quick ditch and don , and the ability to attach to splice baskets , tool totes , and work belts is required . I have never had one come undone , and the can be canted and moved around on the belt as needed .
One is permenantly mounted onto my Fluke T51000 tester holster . The other is attached to my Bag O Drivers . The latter is paracorded onto any pouch I feel like using on any particular day.
Chris