Soon after field testing the Mammut Smart 2.0, I became acutely aware that the carabiner I had paired with the device — the Metolius Element II — was sub-optimal:
- The I-shaped stock in the basket end meant that there was less surface area in contact with the rope, and brake effectiveness was reduced.
- Lack of anti-crossloading features meant that the carabiner sometimes flipped/rotated during usage.
The two features I needed for it to pair nicely with the Smart:
- Round stock at the HMS end