In reply to jasonlane:
If they are a DMM Quickdraw, the 'Tadpole' is always used on the rope clipping end of the draw (NOT THE END USED FOR CLIPPING THE BOLT OR WIRE ). It does the same as the old rubber rings we used to use which were on the outside. They were difficult to assemble and prone to abrasion and wearing out quite quickly. Because the 'Tadpole' is inside the Dyneema it is better protected and less likely to wear.
DMM quickdraws come in 12/18/25 cm lengths on dyneema with the Tadpole sewn in.
Chris Rowlands
Brand Manager DMM