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Sheaves are made of high-impact Delrin™ or Delrin™ with Delrin™ Ball Bearings
Commonly 75mm blocks are for the main and spinnakers on larger FJs
Tubes have a black anodized finish for corrosion protection
The ratchet engagement can be adjusted to a higher or lower load depending on the sailor’s strength
Cruising sailors can benefit from Lewmar's race-bred engineering
HARKEN 38mm Triple Big Bullet Block, 129 Block Size_73 mm Sheaves are made of high-impactLow friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Wire Bullet blocks use roller bearings to carry higher loads and features Hard Lube anodized aluminum sheaves for strength and corrosion resistance. Mast exit blocks with cams are used for halyard controls and under boom mainsheets.
