57 mm Aluminum Block — Swivel Sail Again Use with track/rail2720

Use with track/rail2720

Harken® Lead Rings are simple

The strap has a broad reflective tab for easier operation with gloves

Breaking load (lb)9740 lb

57 mm Aluminum Block — Swivel Sail Again Use with track/rail2720Part No. 3215 Black 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