HARKEN Premium Sailing 57mm HL Black Magic Air Low Load Boat Block, Part 3226

.Great Product
.Harken 57mm Black Magic single loop Block with a removable dead-end post for attachment to a padeye.
.These strong, lightweight blocks feature free-rolling, high-load Torlon roller bearings for a high strength-to-weight ratio
.Used for dynamic high load sail controls including mainsheets, runners, halyards and spinnaker systems
.Air blocks are 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
.Center cage keeps Torlon roller bearings separated and parallel to reduce friction, while the soft-attachment Loop block has a removable deadend post for attachment to a padeye