Harken 51mm Single Wire Block (HK308)

Wire blocks are lightweight, low-friction blocks designed to carry wire halyards and control lines on boats of all sizes.

To minimise friction from twisting or unfair leads, wire blocks feature sideload balls between the sheave and the sideplate. High-load composite bearings carry axial loads. Wire blocks use low-friction thrust washers.

Stainless Steel sideplates offer superb chafe resistance.

Features:
Sheave: 51mm
Weight: 149g
Max Wire Diam: 5mm
Max Line Diam: 6mm
Shackle Pin Diam: 8mm
Maximum Working Load: 907kg
Breaking Load: 1814kg