Mil-Com Carabina 6mm 2 Pack. Useful little things, you can attach most things to your bag or rucksack including keys, camera, GPS, compass, torch etc. In fact most things with a hole that you can attach a piece of string to or a lanyard, can be hung on the outside of your rucksack, bergan or bag and can be at your finger tips whenever needed, without having to rummage in your bag, because, of course, what you want in a hurry is always at the bottom. Not suitable for rock climbing.