Series 40 AP Sheave – Acetal Solid Bearing – 40mm(1-9/16″)OD Precision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. Acetal Sheaves: Choice…Continue readingRonstan Series 40 AP Sheave – Acetal Solid Bearing – 40mm (1-9/16″)OD [RF41000]