Harken® recommends equipping every system with Carbo lead blocks for safe furling from the cockpit. The 7403 outboard assembly allows furling line to travel outboard of the stanchion to keep the sidedeck clear. Block mounts with a strong four-screw clamp without removing the stanchion or lifelines.

• Sheave Ø 29 mm | 1-1/8"
• Weight  84 g | 3 oz
• Maximum line Ø  10 mm | 3/8"
• Use with 25 mm | 1" stanchions