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Mast exit blocks with cams used for halyard controls and under boom mainsheets
a free-spin bearing
The Harken 3/8″ Torlon Ball Bearing Replacements (Part 547) are a pack of 25 high‑strength replacement ball bearings designed for “big boat” captive‑ball (CB) traveler cars and Battcars
The unique sheave design has 8 gripping faces which directly resist loaded line movement and straight resistance faces which both distribute the load and minimize rope wear offset from the radial line
• RFSCISSORS: Scissors
HARKEN 16mm Classic Block - Eyestrap, 442 Item Type_Gudgeons Mast exit blocks with camsThe 16 mm is Harkens smallest block. It is perfect for small synthetic control lines found on high tech dinghies. The bearing system uses stainless steel balls in a captive grooved race and has a 113 kg (250 lb) maximum working load the highest on the market compared to similarly sized blocks. The 442 uses a spacer and the 404 uses an O ring to keep the line in the sheave during intermittent loading. The 467 and 484 use a narrow sheave for extremely
