Here's a list of strengths and uses:

REMEMBER - EACH MANUFACTURERS CORDS ARE TO DIFFERENT SPECS. PLEASE CHECK.

3mm 155 daN Utility cord, guy-lines, draw-cords

4mm 320 daN Utility cord, boot laces

5mm 500 daN Prussik Slings, etriers

6mm 720 daN Nut Slings, Prussik Slings, abseil slings

7mm 980 daN Nut slings, haul rope

8mm 1280daN rescue prussic slings, anchor slings, nut slings, emergency rope***

***MASSIVE HEALTH WARNING*** As an emergency rope, accessory cord is STATIC, not DYNAMIC; It will fail under a leader fall.

REMEMBER - check the manufacturers specs, and get appropriate training.

Cheers, Scott