These Halyard blocks from Uni Maior act as a 2:1 purchase system on the halyard, halving the load of the hoist. The main body is built in aluminium (grade: 6082T6) with a stainless steel pin.
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Specifications
| Recommended line - Max Ø (mm) | 14 | 
| Material | Aluminium | 
| Sheave Ø (mm) | 46 | 
| Material Grade | 6082-T6 | 
| Pin Ø (mm) | 12 | 
| SWL (kg) | 3500 | 
| NBL (kg) | 7000 | 
| A (mm) | 22 | 
| B (mm) | 48 | 
| Weight (g) | 275 | 
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