Harken 45mm Single Black Magic Swivel Block w/Becket

Product Description

The original Harken Black Magic Air blocks have earned their
status as the performance standard among professionals who
specify equipment for race and performance cruising boats.
This year, we’re offering the same serviceable, machined
aluminum, caged roller performance in 45 mm sheave sizes.
These blocks make Black Magic the appropriate choice for
lines that are adjusted often while under load: sheets, guys,
halyards, runners, etc., on smaller boats.

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