57MM BLACK MAGIC LOOP BLOCK
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. The sheave center carries primary load, allowing a smaller, lighter weight block. The soft-attachment Loop block has a removable dead end post for attachment to a padeye. Lashings can also be used.
Sheave Ø (mm)
57 mm
Length (mm)
76 mm
Weight (g)
92 g
Maximum line Ø (mm)
12 mm
Maximum working load (kg)
1134 kg
Breaking load (kg)
2268 kg