Lightweight, low-friction wire blocks carry wire halyards
and high-strength control lines on boats of all sizes.
High-load composite bearings carry axial loads.
Hardkote-anodized Teflon® impregnated sheave for
strength and corrosion resistance.
25 mm (1.00 in) wire blocks use low-friction thrust
washers. 38 mm (1.50 in) and 51 mm (2.00 in) wire
blocks feature sideload balls between the sheave and
the sideplate to minimize friction from unfair leads.
Use for:
Wire halyards, Vangs and Control lines.
Part Number: 309
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We do our best every day to ensure that our prices are the
best you can find. If within 30 days you find a better price,
we’ll refund the difference as a store credit. 
