Harken 57mm Carbo Ratchet Block with Cam Cleat & Becket (2139)
Integrated control for high-load mainsheet systems
The Harken 57mm Carbo Ratchet Block with Cam Cleat & Becket combines powerful holding capability with precise line management in a compact, lightweight design. Ideal for mainsheet systems on performance dinghies and small keelboats, this block features a ratchet mechanism that provides a 10:1 holding power, allowing sailors to hand-hold loaded lines with confidence. The integrated Cam-Matic® cleat facilitates quick, hands-free line adjustments, while the becket offers a convenient tie-off point for multi-part purchase systems. An on/off switch allows the ratchet function to be engaged or disengaged as needed, providing versatility across varying wind conditions.
Specifications
| Length (mm) | 125 |
| Recommended line - Max Ø (mm) | 10 |
| Sheave Ø (mm) | 57 |
| Ratchet | Yes |
| SWL (kg) | 272 |
| NBL (kg) | 680 |
| Weight (g) | 255 |
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