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57mm Black Magic  Footblock, HL Footblock with Lockoff

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HARKEN 3221 57mm Black Magic Footblock, HL Footblock with Lockoff

Item #: 3221 by HARKEN

Brand: HARKEN

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$386.01

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WARNING: This Product May Contain Chemicals Known to the State of California to Cause Cancer or Reproductive Harm. To Learn More Visit P65Warnings.ca.gov
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): 2500 lb. (1134 kg)
  • Breaking Load: 5000 lb. (2268 kg)
  • Weight: 5.44 oz. (154 g)
  • Length: 3 5/16" (84 mm)

Sheave Diameter

57 mm

Ratchet

Non Ratcheting

Integral Cleat

Integral Lockoff

Becket

No Becket

Ball Bearing

Torlon

Mount Type

Mechanical Fasteners

Safe Working Load

2500 Pounds

Direction

Any

Weight

5.3 Ounces

Type

Single Cheek/Foot

Length

3 5/16 Inches

Diameter

7/16 Inch or 11 mm

Product Overview
Harken 57mm Black Magic Footblock with lockoff 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.