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3231 75MM ALUMINUM BLOCK一SWIVEL

BLACK MAGIC AIR BLOCKS ARE A TOP FAVORITE OF BIG BOAT PERFORMANCE RACERS

AND CRUISERS. THESE LIGHTWEIGHT, FREE- -RUNNING, POWERFUL PERFORMERS ARE

USED FOR SAIL CONTROLS THAT SEE LOTS OF ACTION: MAINSHEET, RUNNER, HALYARD,

AND SPINNAKER SYSTEMS. A CENTER CAGE KEEPS TORLON8 ROLLER BEARINGS SEPA-

RATED AND PARALLEL TO REDUCE FRICTION. SHACKLE BLOCKS LOCK IN TWO DIREC-

TIONS OR SWIVEL TO KEEP LINE FROM TWISTING. TORLON IS A REGISTERED TRADEMARK

OF SOLVAY ADVANC