Lewmar - Synchro Block Double 72mm sf12 Horse Power of Engine x

Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM

on either the starboard or port side of the boat

Use biocides safely

3/4" 10 threads per inch

Blakes seacocks have been designed to offer outstanding performance in the marine environment

Lewmar - Synchro Block Double 72mm sf12 Horse Power of Engine xLewmar Synchro blocks are engineered for speed, efficiency and superior handling. Using a combination of scientifically optimised block geometry, a free spin bearing and self aligning head to reduce friction and increase efficiency by up to 40% over budget blocks on mainsheet systems. Each component is perfectly synchronised with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your