The Harken 40mm Carbo Double Swivel Block offers a user-friendly and versatile solution for controlling lines on sailboats, particularly smaller and medium-sized vessels. The combination of double low-friction Carbo sheaves, double swivel heads for smooth line movement at any angle, and a compact size make it a valuable addition to any control line system
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Specifications
| Bearing type | Ball bearing |
| Recommended line - Max Ø (mm) | - |
| Sheave Ø (mm) | 40 |
| Ratchet | No |
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