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
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