Lightweight, high-performance, and durable, the Holt-Nautos Organic ball-bearing block is designed to offer maximum efficiency with reduced weight. Its composite cheeks ensure robustness and lightness, while its aluminum axle improves heat dissipation, extending the block's lifespan even under heavy load.
| Diameter | Max. Line | Working Load | Breaking Load |
| 40mm | 10mm | 200kg | 400kg |