[quote=klozhald][quote=coolhead]Excuse me to hack this thread but since we are talking about blocks. When we say 57mm or 75mm block, where it is measured[/quote]
The outside diameter of the sheave, not the diameter of the channel the line goes through.<!-- editby --><em>Edited by klozhald on Feb 11, 2014 - 03:44 PM.</em><!-- end editby --> [/quote]
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