| Name: | Mammut Bionic HMS Twistlock |
| Category: | twist lock |
| Locking Type: | full-auto |
| Locks: | single |
| Unlock Style: | twist |
| Sleeve Rotation: | 90° (unlocked) | 90° (maximum) |
| Shape: | HMS |
| Material: | aluminum |
| Profile: | I-beam: webbed |
| Nose: | keylock |
| Nose Guard: | none |
| Rivets: | flat disk |
| Gate Shield: | full |
| Weight: | 77.6 g |
| Dimensions: | Length: 111.76 mm Width: 73.74 mm Depth (basket end): 11.24 mm Gate Opening: 21.0 mm |
| Strength Ratings: |  24 kN |  10 kN |  7 kN |
| Other Markings: | Forged: MAMMUT | 0120(ce-logo) (ratings) UK Ⓗ Laser: A090137071 |
| Batch Marking Location: | spine-exterior-left |
| MSRP: | $16.95 (2009) |
| Summary: | early webbed I-beam, hourglass sleeve |
| Description & Commentary: | Mammut's Bionic series of hardware were some of the first carabiners with webbed I-beam profiles. Large size at a competitive weight, with distinctive, smooth lines, the Bionic HMS has a nice symmetrical rounded basket which makes it a pleasure to use and compatible with lots of wide hardware (such as fixed side plate pulleys, ascenders upper attachments). I think these were produced for Mammut by DMM, given the similar markings with known DMM products, practically identical Mammut & DMM carabiners from this time, and the hotforging process. This example is probably a slightly later production than the screw lock example, as it uses the longer A-series batch number rather than the three-letter code. |