Ronstan Ball Bearing Series 30 BB Orbit Block Single Swivel with Shackle Head - Heavy Duty Marine Block for Sailing, Rigging, and Boat Hardware Applications

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. Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required

FEATURES
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines