Harken 57 mm Aluminum Triple Block — Swivel Descatalogado Everything you need to accurately

Everything you need to accurately measure depth

with simple plug-together extensions available to suit larger vessels

Use where the specified upgrade matches the required system architecture

Length (mm) 48 mm

6 degree beamwidth at 50kHz

Harken 57 mm Aluminum Triple Block — Swivel Descatalogado Everything you need to accuratelyBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay