Ronstan Series 30 Ball Bearing Orbit Block™ - Stand Up Swivel xlowpush Use an upper support bracket

Use an upper support bracket (sold seperately) if the lengt of antenna and mast total more than eight feet

Retail version includes 5 amp fuse and holder

2" hole cut-out size

Manufacturer Part No : 607393

The base of the poles are made of solid fiberglass for greater strength and stability

Ronstan Series 30 Ball Bearing Orbit Block™ - Stand Up Swivel xlowpush Use an upper support bracketSeries 30 Ball Bearing Orbit Block Stand Up Swivel 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 fiber reinforced composites in the block head, cleat arms and beckets. Features: