381
29mm Carbo Double Fixed Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.
Technical specifications · Harken 381
| Sheave diameter | 29 mm |
|---|---|
| Length | 54 mm |
| Weight | 34 g |
| Maximum line diameter | 8 mm |
| Maximum working load | 299 kg |
| Breaking load | 737 kg |
For versions with a cam cleat, the stated loads are limited by the strength of the cleat.