ID
1299125
$ 337.72
1-2 weeks delivery time
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The Harken 3391 45mm Black Magic 1-Sheave Swivel Block offers low-friction operation with a swivel function to prevent line twisting, suitable for mainsheet, runner, halyard, and spinnaker lines up to 10 mm and a maximum working load of 750 kg.
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Harken 3391 - 45mm Black Magic 1-Sheave Aluminum Block Swivel
The Harken 3391 Black Magic 1-Sheave Swivel Block offers smooth, friction-reduced operation for high-performance sailors. Designed for mainsheet, runner, halyard, and spinnaker controls, it features a swivel function to prevent line twisting and a durable aluminum body with Torlon® roller bearings for reliable load handling.
- Item number: HK3391
- Sheave Ø: 45 mm / 1 3/4 in
- Length: 100 mm / 3 15/16 in
- Weight: 79 g / 2.79 oz
- Maximum line Ø: 10 mm / 3/8 in
- Maximum working load: 750 kg / 1653 lb
- Breaking load: 1500 kg / 3306 lb
- Shackle pin Ø: 5 mm / 3/16 in
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