Design Features:
▋The body, bail, and bail support are cast with special alloy steel.
▋Equipped with a hydraulic snubber assembly to protect drill pipe joints when making up/breaking out connections.
▋At the hook there is a reliable safety device.
▋It is provided with a braking device to lock up & lock out the body.
▋The primary-load-carrying parts of hook are subject to NDE test.
▋The hooks conform to API Spec. 8A/8C and are stamped with API monogram.
Specifications of Hooks :
| Model | DG90 | DG135 | DG170 | DG225 | DG315 | DG450 | DG585 | |
| Max. hook load | kN | 900 | 1350 | 1700 | 2250 | 3150 | 4500 | 5850 |
| Major-hook opening | mm (in) | 155 (61/16) | 165 (61/2) | 180 (7) | 190 (71/2) | 220 (85/8) | 220 (85/8) | 238 (93/8) |
| Diameter of Major-hook | mm (in) | 116 (41/2) | 140 (51/2) | 150 (6) | 160 (61/4) | 180 (7) | 180 (7) | 180 (7) |
| Spring travel | mm (in) | 180 (7) | 180 (7) | 180 (7) | 180 (7) | 200 (8) | 200 (8) | 200 (8) |
| Overall dimension (L×W×H) | mm | 2000×680 ×600 | 2200×720 ×616 | 2450×750 ×630 | 2545×780 ×750 | 2953×890 ×830 | 2950×890 ×880 | 3156×930 ×930 |
| Weight | kg | 1800 | 1910 | 2020 | 2180 | 3410 | 3496 | 3900 |