Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets.
Zircon Block – Single Sheave 29 mm
The Zircon single sheave block offers cutting-edge performance tailored for racing sailors. Designed with a focus on durability and efficiency, it features a 29 mm ceramic bearing sheave that supports ropes up to 6 mm and manages workloads of up to 80 kg. This block is perfect for lightweight and high-performance sailing.
Features of the Harken Zircon Series
- Lightweight design for enhanced performance
- Zirconium ceramic bearings for reduced drag and extra strength
- Reliable, durable construction for long-term use
- Smooth operation, even with minimal loads
Technical Details
- Single 29 mm sheave
- Maximum rope diameter: 6 mm
- Maximum workload: 80 kg
| Series |
Zircon |
| Sheaves Ø |
29 mm |
| Number of sheaves |
1 |
| Bearing |
Ball bearing |
| Max rope diameter |
6 mm |
| Swivel |
No |
| Cam |
No |
| Ratchet |
No |
| Breaking Strength (kg) |
240 |
| Safe Working Load (kg) |
80 |
