Specifications for Harken 57mm Carbo Block - Ratchet, swivel
| Bearing type | Ball bearing |
| Recommended line - Max Ø (mm) | 10 |
| Colour | Black |
| Sheave Ø (mm) | 57 |
| Pin Ø (mm) | 5 |
| Ratchet | Yes |
| SWL (kg) | 227 |
| NBL (kg) | 907 |
| A (mm) | 57 |
| B (mm) | 103 |
| C (mm) | 5 |
| Weight (g) | 85 |
Harken Carbo Air blocks are made of tough reinforced composite in a size and style to fit any system: singles, doubles, triples, quads & quints; ratchets and fiddles; soft and hard attach. They have very high working loads for safe, easy trimming and are lightweight, strong, reliable and affordable. Carbo ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. The 57mm switchable ratchets provide precise on/off control with accessible, easy-to-operate switches on both sides of the block. Nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are hardcoat anodized for strength and corrosion resistance. Eight facets hold the line securely. Ball bearings, sheave, and sideplates are UV-stabilized.
Specifications
| Bearing type | Ball bearing |
| Recommended line - Max Ø (mm) | 10 |
| Colour | Black |
| Sheave Ø (mm) | 57 |
| Pin Ø (mm) | 5 |
| Ratchet | Yes |
| SWL (kg) | 227 |
| NBL (kg) | 907 |
| A (mm) | 57 |
| B (mm) | 103 |
| C (mm) | 5 |
| Weight (g) | 85 |
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