Product Description

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.

Part Number: 3251
**Replaces 3013

Imperial Metric
Sheave Dia. 4" 100 mm
Length 6 3/16" 157 mm
Clevis Pin 5/8" 15.9 mm
Max Line 5/8" 16 mm
Maximun Working Load 7500 lb 3402 kg
Breaking Load 15000 lb 6802
Weight 17 oz 481 g
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Harken 100mm Runner Block
Original Price: $ 715.20
Price: $ 629.38

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