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High compression grade acetal orbital ball bearings migrate to the loaded area of the sheave to handle light to moderate loads
Big Bullet blocks can be used as main or jib sheet blocks on dinghies
Lewmar's Domino mechanism flexes it (bottom) for better grip and less wear
Fiber-Reinforced Nylon Body
add endstops to traveler track to absrob shock loads
HARKEN 38 mm Wire High Strength Cheek Block, 305 Block Size_29 mm High compression grade acetal orbitalHarken 38mm High Strength Wire Cheek Block with high load composite bearings to carry axial loads. Harken's Lightweight, low friction blocks with high load composite bearings carry wire halyards and control line cascades. Side load balls reduce friction from twists or unfair leads on 304 311. 300 303 has thrust washers. Blocks open to allow passage of swaged wire. Hard Lube anodized sheave for strength and corrosion resistance. Cheek blocks include
