Ronstan Series 30mm Single Swivel Orbit BB Block, Becket

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Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options . Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.Applications Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft) Halyard, vang and backstay applications on boats to 5m (16ft) Control line applications on larger yachts Show more