Set screw allows shackle to be fixed or to swivel.
Harken 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. Black Magic 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.
Shackle blocks lock in two directions or swivel to keep line from twisting
Side plates made of aluminum hard-cote anodized for durability and to stay looking as black as their name for years. All the time doing the strength/responsiveness magic we designed into them.
Easy maintenance
Quick disassembly with hex wrench; minimal number of fasteners; no loose balls or rollers.
Low-friction efficiency for fast trim and release
Center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Captive Delrin® ball bearings carry side loads.
SKU:HKN-3249
Vendor:Harken 100 mm Aluminum Footblock
- Regular price
- 70 700 XPF
- Sale price
- 70 700 XPF
- Regular price
- 81 300 XPF
SKU:HKN-3248
Vendor:Harken 100 mm Aluminum Double Block — Swivel
- Regular price
- 168 100 XPF
- Sale price
- 168 100 XPF
- Regular price
- 193 200 XPF
SKU:HKN-3246
Vendor:Harken 100 mm Aluminum Block — Swivel
- Regular price
- 79 200 XPF
- Sale price
- 79 200 XPF
- Regular price
- 91 100 XPF
SKU:HKN-3245
Vendor:Harken 100 mm Aluminum Loop Block
- Regular price
- 82 900 XPF
- Sale price
- 82 900 XPF
- Regular price
- 95 300 XPF
SKU:HKN-3243
Vendor:Harken 75 mm Aluminum Low-Load Block — Swivel
- Regular price
- 49 900 XPF
- Sale price
- 49 900 XPF
- Regular price
- 57 400 XPF
SKU:HKN-3241
Vendor:Harken 75 mm Spriddle Block — Swivel
- Regular price
- 102 100 XPF
- Sale price
- 102 100 XPF
- Regular price
- 117 300 XPF