Harken recommends equipping every furling system with Carbo lead blocks for safe furling from the cockpit. The 7404 kit’s lightweight, UV-stabilized Carbo blocks run exclusively on ball bearings for fast trimming under any load. The 7404 lead block kit provides a complete system for most boats.
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.
www.P65Warnings.ca.gov