• DMM Boa HMS Screwgate | Rock Climbing | HMS Locking Rigging Carabiner



A large locking carabiner perfect for rigging and use as a central connection point


One of the great rigging carabiners of our time - large enough to accommodate at least two large 11mm clove hitches and has a wide (25mm) gate opening.  Its drop-forged, I-beam construction, gives a 25% reduction in weight when compared to the original Boa.  As with other DMM carabiners, the shape and function is spot on allowing easy handling - even in gloves maintaining appeal for winter climbing, rock climbing and centre use.

Boa Carabiner Features

  • Large clean nose HMS locking biner
  • Ideal for rigging; can accommodate multiple knots
  • Clean key-lock nose makes rigging multiple ropes and slings easy
  • Large gate opening
  • Asymmetric shape sits naturally in the hand for great ergonomics
  • Easy to handle in gloves
  • Strong I-Beam construction to save weight (almost 25% reduction)
Variant Strength (Gate Closed) Strength (Gate Open) Strength (Minor Axis) Gate Opening Weight
Boa Screwgate 25kN 8kN 10kN 25mm 86g



Primary Use Trad Climbing
Equipment Type Locking Carabiner
Brand DMM
Weight 0.086kg


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