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Bionic HMS Carabiner

Bionic HMS Carabiner

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Bionic HMS Carabiner

The Mammut Bionic HMS Carabiner will exceed your expectations no matter what you're climbing, whether it's rock, ice, or a bit of both. I-Beam technology uses a special high-precision hot forging method that keeps this biner surprisingly light, despite its conveniently oversized frame. A Twistlock mechanism makes sure your belay is always locked, and a keylock nose lets you unclip  without a hassle. Mammut designed the Bionic with a large arc radius that accommodates any safety device or knot without bulking.


  • Mammut's best-selling locking carabiner for belay devices
  • HMS twist lock automatically locks whenever the gate is close
  • Large curve accommodates belay devices and knots
  • Keylock nose eliminates snagging on slings and belay devices
  • Item #MAM00DY
I-Beam hot-forged aluminum
Gate Type
straight, locking
Major Axis Strength
24 kN
Minor Axis Strength
10 kN
Open Gate Strength
7 kN
Gate Opening
hot-forged aluminum
Claimed Weight
2.75 oz
Recommended Use
belaying, rock climbing
Manufacturer Warranty
2 years