HARKEN 75 mm Aluminum Black Magic Spriddle Block - Swivel, 3241 Tracks & Slides_System AA - Micro Slug-Mount 13 mm Battcar Track Both fixed positions provide 30°

Both fixed positions provide 30° of rotational “float” to allow the block to self-align to the system

Open Delrin™ ball bearing race design guarantees low friction and easy maintenance

The robust construction of the Midrange series make them a good choice to handle the high loads found on medium and large offshore boats

Controls feature 57 mm Black Magic Big Boat ball/roller sheaves and high-load aluminum sideplate

This is a good-looking

HARKEN 75 mm Aluminum Black Magic Spriddle Block - Swivel, 3241 Tracks & Slides_System AA - Micro Slug-Mount 13 mm Battcar Track Both fixed positions provide 30°The workhorse of the Harken line, the entire range of Black Magic AirBlocks has been redesigned with a sleek new look. Their unique, performance packed engineering remains exactly the same. Used on offshore boats, these strong, lightweight blocks feature aluminum cheeks, and free rolling, high load Torlon roller bearings for a high strength to weight ratio. Use them for sail controls that see lots of action mainsheet, runner, halyard, and spinnaker