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Harken Air Runner® Black Magic® Single 57 mm
Cat. No. HAR 3039
Weight 1 lbs

3039 BLK-57MM HL RUN

Black Magic® Air Runners® are strong, lightweight blocks with extremely free-rolling sheaves. Blocks feature Torlon® roller bearings in a center cage for strength. Sideload bearing strips dampen rig vibration.

Integral sideplate bails and recessed cotter key help produce a smooth design that won’t snag lifelines.

Description Single
Sheave dia. (in) 2.25
Length (in) 3 3/8
Weight (oz) 4.4
Clevis pin dia. (in) 3/8
Line dia. - optimal (in) 3/8
Line dia. - max. (in) 7/16
SWL (lb) 2500
Breaking strength (lb) 5000

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