The low-profile HarkenFlip-Flop blocks are lightweight and can be used
for various leads on your boat including halyard leads, mainsheet leads
The Harken Flip-Flop block has aluminum hardcoat-anodized
side plates and features Hard Lube-anodized aluminum sheaves for strength
The high-load flip-flop blocks pivot around the line axis to keep line
close to the deck. Hinged construction allows variable leads. Lockoff provides
a temporary stop to free up winches.