Harken 25mm Single Wire Block (HK300)
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.
Max Wire Diam: 2mm
Max Line Diam: 4mm
Shackle Pin Diam: 5mm
Maximum Working Load: 454kg
Breaking Load: 907kg