Looking for high quality Karver blocks or a Karver Furler? Look no further than Fisheries Supply! We offer the KF Flying Sail Furler from Karver systems and several of their most popular sailboat blocks. Started in 2004, Karver believes in products built to attain top technological performance using bio sourced materials in place of materials from the oil sector – so you can feel good about using Karver blocks and furlers on your sailboat!