BLACK MAGIC AIR BLOCKS

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. Offered in 57 to 150 mm sizes, with low-load versions in 57 and 75 mm ranges

High-strength, lightweight

• Aluminum sheaves and sideplates.
• CNC sculpted or optimal strength-to-weight.

Stands up to sun, salt, and time

• Sideplates and sheaves Hard Lube-anodized for maximum UV protecction and a smoth surface.
• Dissimilar metals isolated to prevent corrosion.

Low-friction efficiency for fast trim and release

• Center cage keeps Torlon roller bearings separate and parallel to reduce friction.
• Captive Delrin ball bearings carry side loads.

Shackle blocks in two direcctions or swivel to keep line for twisting

• Set screww allows shackle to be fixed or to swivel.

Soft-attach options

• Loop or lash through sheave center instead of block head.
• Sheave center carries primary load, allowing a smaller, lighter weight block.

Soft-attach options

• Patented Loop blocks have a removable dead end post for attachment to a padeye.

* Loop not included

** Includes padeye part No. 648