|Name:||DMM Mamba (Screwgate)|
|Unlock Style:||gate stopped - gate stop|
|Sleeve Rotation:||990° (unlocked) | 1485° (maximum)|
|Nose:||notch & pin|
|Anti Crossload:||captive eye(s)|
|Dimensions:||Length: 109.94 mm|
Width: 59.5 mm
Rope Bearing Depth: 8.2 mm
Gate Opening: 17.34 mm
|Strength Ratings:||23 kn | 10 kn|
|Strength Gate Open:||10 kn|
|Other Markings:||Forged: DMM WALES | (ratings)|
|Batch Marking Location:||captive-eye-right|
|Collection Criteria:||★ Manufacturing, Engineering, or Design|
★ Historically Interesting or Iconic
|Summary:||first hot-forged carabiner & captive eye for webbing|
|Description & Commentary:|
Introduced in 1992, DMM Mamba body was the first hot-forged aluminum alloy carabiner, a process which moves more material than when bent or cold-forging carabiner bodies. This helps designers maximize strength and minimize weight - common in today's world of high-performance climbnig carabiners.
Although first released in non-locking versions, DMM produced this screwlocker variant later on.
The Mamba body sports a deep, pointed basket with a rope guide groove, a bowed spine and captive eye designed for the webbing of a quickdraw. All these features aid in clipping the carabiner into a bolt or the rope into a carabiner when sport climbing - something certainly valued by rock climbers while leading a difficult pitch!
The nose has a narrow, full-length guard - better than nothing, but the gate and rivets still extend significantly beyond the guard. At the time of the Mamba's release (early 90's), a nose guard would have been relatively new feature. The rear of the gate is mostly shielded, but the captive eye should practically eliminate any crossloading and accompanying rope shredding.