Harken Flip-Flop Small Boat Block w/Cam Cleat - 57mm Fuel Additives & Treatments A multi-coil spring recessed in

A multi-coil spring recessed in the upper part of the cam generates near constant torque

In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems

PYI - PSS Shaft Seal #02-300-500 Shaft Size - 3

day and night

Ahead: GORI efficiency is better than most 2 ~ 3 blade feathering and folding propellersAstern: GORI has an efficiency equal to or better than most 2 ~ blade fixed

Harken Flip-Flop Small Boat Block w/Cam Cleat - 57mm Fuel Additives & Treatments A multi-coil spring recessed inSmall Boat Flip Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles.