Black Magic® AirBlocks® are strong and lightweight. They feature free-rolling, high-load Torlon® roller bearings for a high strength-to-weight ratio. They're easy to clean and service. They have few parts and no loose balls or rollers to misplace. Unlike blocks that are riveted, fasteners allow quick disassembly with a single hex wrench. Use them for sail controls that see lots of action, such as mainsheet, runner, halyard, and spinnaker systems.
