Mammut Smart HMS 2.0 Carabiner
Best safety carabiner for climbers prioritizing the prevention of misalignment.
This carabiner prioritizes security with a unique safety gate that prevents cross-loading, making it an excellent choice for belaying. While the added safety features introduce a bit more complexity than a standard gate, the snag-free nose and reliable locking mechanism offer peace of mind for climbers seeking extra protection.
$19.95
at
Backcountry
More Smart HMS options
Who it's for
- Safety-conscious climbers wanting to eliminate accidental cross-loading risks
- Belayers seeking a smooth rope flow and comfortable grip
- Traditionalists who prefer the tactile security of a manual screw-gate
Who should skip it
- Ultralight climbers prioritizing the smallest and lightest gear possible
- Multi-discipline climbers using a wide variety of non-standard belay tools
- Fast-paced climbers who find additional safety steps tedious or slow
Performance breakdown
Cross-loading prevention
The integrated safety gate effectively eliminates dangerous carabiner rotation during belaying.
Clipping efficiency
Keylock nose design ensures snag-free operation when clipping into gear loops.
Structural integrity
Robust aluminum construction provides high major axis strength for demanding climbs.
Locking mechanism speed
Screw-gate operation is secure but requires more manual attention than auto-lockers.
Ergonomic handling
Thoughtful shape fits naturally in the hand for smooth, controlled belaying.
Weight-to-strength ratio
Solid performance metrics, though slightly heavier than minimalist ultralight options.
Key Specs
Material
Aluminum
Gate Type
Locking, screw gate
Major Axis Strength
28kN
Minor Axis Strength
11kN
Open Gate Strength
6kN
Length
119mm
Width
77mm
Weight
93.55 grams
Keylock Nose
Yes
Safety Gate
Yes
Know before you buy
Still have a question?
Ask Metto anything about the Mammut Smart HMS 2.0 Carabiner before you decide.
