Product Description

125 mm and 150 mm AirBlocks® feature Torlon® rollers in a self-contained center cage. Rollers stay parallel for low-friction efficiency. UV-resistant, carbon-black Delrin® balls carry sideloads.

Used on offshore boats, these blocks offer a no''climb-ou'' deep groove sheave with radiused edges to protect line. Sculpted aluminum sideplates and thin-profile sheaves make these blocks very lightweight. No stainless-to-aluminum contact prevents corrosion.

Includes padeye. Uses hole spacing and base dimensions of 648 padeye.

Use for:
Sheets, Halyards, Running backstays and Control lines.

Part Number: 3261
**Replace 3018

Imperial Metric
Sheave Dia. - 125 mm
Length 9 1/16" 230 mm
Weight w/Shackle 44.72 oz 1268 gr
Max Line Dia. 3/4" 19 mm
Maximum Working Load 11000 lbs 4990 kg
Breaking Load 22000 lbs 9977 kg


A 3 21/32" 93 mm
B 4 1//32" 103 mm
C 2 1/4" 57 mm

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Harken 125mm Standup Block
Original Price: $ 940.75
Price: $ 827.86
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