Black 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 Advanced Polymers L.L.C.
|Sku||Name||Sheave Ø mm (in)||Length mm (in)||Weight g (oz)||Maximum line Ø mm (in)||Maximum working load kg (lb)||Breaking load kg (lb)||Shackle pin Ø mm (in)|
|3218||57 mm Black Magic Air Aluminium Double Block — Swivel, Becket||57 (2 1/4)||152 (6)||352 (12.43)||12 (7/16)||1633 (3600)||3267 (7200)||8 (5/16)|