| Name: | Clog (twistlock D) |
| Category: | twist lock |
| Locking Type: | full-auto |
| Locks: | single |
| Unlock Style: | twist |
| Sleeve Rotation: | 120° (unlocked) | 120° (maximum) |
| Shape: | asymmetric D |
| Material: | aluminum |
| Profile: | flat |
| Nose: | notch & pin |
| Nose Guard: | none |
| Rivets: | domed |
| Gate Shield: | none |
| Weight: | 81 g |
| Dimensions: | Length: 110 mm Width: 62.44 mm Rope Bearing Depth: 9.7 mm Gate Opening: 20.32 mm |
| Strength Ratings: |  2800 KG |
| Other Markings: | Stamped: CLOG | BRITAIN 2800KG Hand Engraved: 112503550 | 112503550 |
| Summary: | early twistlock from originator of the twistlock |
| Description & Commentary: |