40mm ball bearing block from Ronstan in triple block with becket and swivel head configuration. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing system provides consistent performance under the full load range. Ideal for mainsheet triming systems, halyards, or spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 26 feet.
- Low friction Acetal or Torlon® bearing system
- Lightweight
- Cheek cut-outs for easy bearing maintenance
- Features a swivel shackle head for full 360° rotation
- Max Rope Diameter - 3/8 in / 10 mm
- M.W.L. - 1320 lb
- B.L. - 3090 lb
- Weight - 7.4 oz
