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The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing
A multi-coil spring reacessed in the upper part of the cam generates near-constant torque
Harkin 40mm Carbo Air® Triple Blocks 3-Way U-Lock allows a change of headpost direction
Alloy cheek plates for maximum strength
They stand up to the rigors of ocean racing but will serve you well wherever you sail
HARKEN 16mm Sheave, 415 Block Size_38 mm The proven Ronstan 2-stage bearingMicro, Bullet, and Big Bullet sheaves are made with Delrin ball bearings and scored to provide friction for the rope. 16mm AirBlock sheaves are Delrin and feature stainless steel ball bearings that ride in a grooved race. Mid range sheaves come in either Delrin or aluminum for wire. Wire sheaves ride on high load composite bearings and are Hardkote anodized aluminum with Teflon impregnation. Ball bearings in the 1 1 2" and 2" sheaves minimize
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