Ronstan Orbit Blocks

Ball Bearing Orbit Blocks® boast the highest strength-to-weight ratio available.
This is achieved through all-composite reinforced polymer materials and a Dyneema(R) rope link head. The precision design of these Ronstan Blocks allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fibre-reinforced composites in the block head, cleat arms and beckets.