This Harken 51 mm wire block, single with swivel is designed for wire and lines under high loads, where low friction and reliable performance on board are essential.
The block features a Hardkote-anodized, Teflon-impregnated aluminum sheave with a composite bearing, which provides effective load handling and smooth movement.
The 51 mm wire block can be opened to insert the line, and Delrin ball bearings help handle side loads and minimize friction between the sheave and the block cheeks.
Key features
For wire up to Ø5 mm
For line up to Ø6 mm
Sheave Ø51 mm
SWL 907 kg
Breaking strength 1814 kg
