57mm Black Magic® Footblock, HL Double Footblock

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SKU: 3222 Categories: ,
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Harken 57mm Black Magic® High-load double Footblock allows redirection of lines on the deck.

The entire line of Black Magic® AirBlocks® offer a sleek and polished look. Their unique performance engineering remains the staple of the Black Magic line of blocks. These strong, lightweight blocks feature free-rolling, high-load Torlon® roller bearings for a high strength-to-weight ratio. Used for dynamic high load sail controls including mainsheets, runners, halyards and spinnaker systems.

Air blocks are easy to clean and service. They have few parts and no loose balls or rollers to misplace. Unlike blocks that are riveted, fasteners allow quick disassembly with a single hex wrench.

Key Features

  • Lightweight blocks with high-load Torlon® roller bearings for a high strength-to-weight ratio
  • Ideal for sail controls including mainsheet, runner, halyard, and spinnaker systems
  • Center cage keeps Torlon® roller bearings separated and parallel to reduce friction
  • Sheaves have radiused edges to protect today’s high-tech line
  • Footblocks with lockoffs temporarily secure sheets
  • Use to Handle huge loads associated with Genoa and Spinnaker Sheets
  • Sheave Diameter: 2 1/4″ (57 mm)
  • Max. Line Diameter: 7/16″ (12 mm)
  • Max. Working Load (MWL): 1650 lb. (750 kg) 
  • Breaking Load: 3300 lb. (1500 kg)  
  • Weight: 7.6 oz. (215 g)
  • Length: 3 5/16″ (84 mm)

Additional information

Sailboat Blocks

Foot Blocks

Ball Bearings Torlon
Becket No Becket
Diameter 7/16 Inch or 11 mm
Direction Any
Integral Cleat No Integral Cleat
Length 3 5/16 Inches
Mount Type Mechanical Fasteners
Ratchet Non Ratcheting
Safe Working Load 1650 Pounds
Type Double Cheek/Foot
Weight 6.9 Ounces
Sheave Diameter 57 mm
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