![Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200] Marine Plumbing & Ventilation | Ballast Pumps No manual tuning is needed](https://cdn.shopify.com/s/files/1/0422/8913/5778/files/70616XL.jpg?v=1744395640)
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
No manual tuning is needed
Thread Length: 4-3/4"
Innovative shoulder strap tethering system transforms into safety harness to connect everyone together while in the water
Adjustable and Long wearing
Attwood offers one of the first 3NM LED transom navigational lights
Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200] Marine Plumbing & Ventilation | Ballast Pumps No manual tuning is neededSeries 40 Ball Bearing Block Double Swivel Head Features: Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Features a swivel shackle head for full 360 rotation 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: Mainsheet Halyard Vang Spinnaker control lines