Impressively strong.

Designed for self-securing and belay set up on big walls, mixed climbs, and multi-pitch endeavors, the Mammut 12.0mm Belay Chain Sewn Runner features six high-strength rings, each rated at a tensile strength of 24 kN. Its impressive breaking strength is the result of its coiled Dyneema core encased in an abrasion-resistant sheath.

  • Round-coiled Dyneema core
  • Abrasion-resistant sheath
  • 24 kN breaking strength
  • Reviews
  • Q & A

This chain Rocks!

  • Familiarity: I've used it several times

I love this chain! It stores nicely to the harness clipped at different lengths and works great at anchors. I usually used a tether with a water knot just in case I need to leave a bail rap anchor but this thing is so convenient. It definitely stays on for sport routes now.