Harken 353 29mm Double Traveler Carbo Block, Item #353 Round Base we have altered the size

we have altered the size and geometry of the Zooka II Rod Holder to better accept larger conventional gear and will accommodate just about any rod other than a fly rod

Just screw the 2 halves together and it's ready to use

Manufacturer unknown

It installs permanently on the boom and allow you to instantly attach and adjust your sail in high wind and waves

Harken 353 29mm Double Traveler Carbo Block, Item #353 Round Base we have altered the sizeHarken 353 29mm Double Traveler Carbo Block, Item #353 Low friction Carbo AirBlocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic line, these small, compact blocks have very high working loads for safe, easy trimming. The compact 29 mm Carbo is extremely strong. Use our miniature Carbo as a mainsheet block on small dinghies such as the Optimist, or for low friction control blocks on any size boat. Use