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Zircon blocks offer exceptional performance for sail trimming
A standard of excellence in an economical antenna
Total Length - 215'
Instruction Manual
has a sheave diameter of 57mm (2 1/4 inches) and can handle line diameters up to 10mm (3/8 inches)
Ronstan Series 40 Orbit RT Sheave Replacement Cassette Boat Viper 16 Zircon blocks offer exceptional performanceSeries 40 Orbit RT Sheave Replacement Cassette The Series 40 ball bearing Orbit Blocks provides the perfect balance of strength, performance, and reliability. They offer class leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks the perfect balance of performance and