HARKEN 57mm Aluminum Block — Swivel 30050 Includes full function hand held

Includes full function hand held RF remote control unit

Maximum line Ø (mm) 10 mm

Suits mainsheet and halyards up to 12mm rope

The handle and grab bar are cross-ribbed and braced for enhanced stiffness

HARKEN 57mm Aluminum Block — Swivel 30050 Includes full function hand heldBlack Magic Air blocks are a top favourite 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 centre 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