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![Harken 16mm Double Block [406]](https://www.seamarinepart.com/wp-content/uploads/2026/10/23/1792737869/harken-16mm-double-block-406.webp)
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16mm Double BlockThe 16 mm is Harkens smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race.Specifications:Sheave: 16mm / 5/8in.Length: 43mm / 1-11/16in.Weight: 27g / .94ozMaximum line: 5mm / 7/32inMaximum working load: 204kg/ 450lbBreaking load: 544kg / 1200lb
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