pstrongSeries 40 Ball Bearing Block - Double - Swivel HeadstrongppstrongFeatures:strongpulliLow friction Acetal or Torlon® bearing systemliliLightweightliliCheek cut-outs for easy bearing maintenanceliliFeatures a swivel shackle head for full 360° rotationliulpSheaves 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.ppstrongApplications:strongpulliMainsheetliliHalyardliliVangliliSpinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)liul!-- cis2:mm5lnZ1k --