There are two optional materials: superior carbon steel and alloy steel.
It is forged and heat treated.
Alloy steel shank hook: Ultimate load is 4 times the Working Load Limit.
Carbon steel shank hook: Ultimate load is 5 times the Working Load Limit.
| Item Code | Weight (kg) | Alloy Steel | Carbon Steel | B±1 | E±1 | C±0.3 | M±0.5 | G±1.5 | F±1 | D±0.5 | L±1.2 |
| Woring Load Limit (t) (4:1) | Woring Load Limit (t) (5: 1) | ||||||||||
| SLR-297 | 0.23 | 1 | 0.75 | 73 | 25 | 15 | 18 | 16 | 51 | 32 | 127 |
| SLR-297 | 0.34 | 1.5 | 1 | 80.3 | 25.5 | 16.7 | 20 | 18 | 58 | 35 | 147 |
| SLR-297 | 0.45 | 2 | 1.5 | 92 | 30.4 | 18.4 | 23 | 22.5 | 67 | 38 | 165 |
| SLR-297 | 0.84 | 3 | 2 | 105 | 32 | 22.4 | 26 | 24 | 69 | 41.4 | 177.5 |
| SLR-297 | 1.75 | 5 | 3 | 126 | 38.5 | 29.5 | 32 | 29 | 82 | 51 | 216.5 |
| SLR-297 | 3.29 | 7 | 5 | 167 | 47 | 35.8 | 40 | 36 | 95.5 | 64 | 262.5 |
| SLR-297 | 6.1 | 11 | 7.5 | 192 | 61 | 46 | 51 | 47.7 | 111.2 | 76 | 323 |
| SLR-297 | 8.2 | 15 | 10 | 214.6 | 66 | 50.8 | 55.6 | 55.5 | 114 | 82.5 | 342 |
| SLR-297 | 16 | 22 | 15 | 262.5 | 89.5 | 65 | 68.8 | 68.5 | 141 | 108 | 426 |
