Plain Sheave - Double Reverse Shackle - Size 4 - Technical specifications : block, size 4
- Sheave diameter : 58 mm
- Sheave width : 17 mm
- Max. rope diameter : 12 mm
- Safe Working Load (SWL) : 630 kg
- Breakload : 1260 kg
- Weight: 275g
- Length: 130mm
Plain Sheave 
| Particularly suitable in applications where high static loads are expected. No risk of ball distortion. - Mast foot blocks
- Mast halyard blocks
- Kicker or vang tackles
- Backstay tensioner tackles
- Downhauls: spinnaker, mainsail and jib
- Jib outhauls
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Barton produce a comprehensive range of lightweight blocks manufactured in England, from glass filled nylon and high grade stainless steel. The result is a range of free running blocks assuring ultimate performance, efficiency and long working life. Sheaves are moulded from Acetal resin. The ball bearing sheaves run on Delrin balls for extremely low friction
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