Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Lighting | Bulbs Molded-in brass thrust bearing design

Molded-in brass thrust bearing design

Household style

It's a value that can't be beat - a quality

Wide lateral angle

Material: Neoprene

Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171] Lighting | Bulbs Molded-in brass thrust bearing designSeries 40 Ball Bearing Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Applications: Typically used for halyards at the mast base. Materials: Acetal ball