Tylaska Halyard Shackle 2:1
| Diameter | Breaking strength | |
| H5 | 8 - 10mm | 2,500kg |
| H8 | 10 - 12mm | 4,000kg |
| H12 | 12 - 14mm | 6,000kg |
| H20 | 14 - 16mm | 10,000kg |
Tylaska halyard shackle. These shackles have the highest strength-to-ratio of any existing halyard shackles, available in 4 different sizes. The halyard shackle is also available in a 2:1 system with a sheave.