<http://schema.org/description>
"These lightweight, low-friction Wire Blocks by Harken carry wire halyards and high-strength control lines on boats of all sizes. High-load, composite bearings carry axial loads. The sheave is Hardkote-anodized and Teflon impregnated for strength and corrosion resistance. 1.00 in wire blocks use low-friction thrust washers while 1.50 in and 2.00 in wire blocks have sideload balls between the sheave and the sideplate to minimize friction from unfair leads.The Wire Cheeks in this line include fasteners: 5/16 In (8 mm) RH for the H301.This range is great for wire halyards, vangs and other control lines with high loads where the line does not travel a lot."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.apsltd.com/wire-cheek-2.html>