Description
Harken 57mm-100mm Black Magic Air Single Becket Block are a top favourite of Big Boat performance racers and cruisers. Also, these lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A centre cage keeps Torlon® roller bearings separated and parallel to reduce friction. In addition, shackle blocks lock in two directions or swivel to keep line from twisting.
Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
| Sku | Name | Sheave Ø mm (in) | Length mm (in) | Weight g (oz) | Maximum line Ø mm (in) | Maximum working load kg (lb) | Breaking load kg (lb) | Shackle pin Ø mm (in) |
|---|---|---|---|---|---|---|---|---|
| 3216 | 57 mm Black Magic Air Aluminium Block — Swivel, Becket | 57 (2 1/4) | 140 (5 1/2) | 166 (5.86) | 12 (7/16) | 1134 (2500) | 2268 (5000) | 6 (1/4) |
| 3232 | 75 mm Black Magic Air Aluminium Block — Swivel, Becket | 75 (2 15/16) | 157 (6 3/16) | 363 (12.8) | 14 (9/16) | 2268 (5000) | 4536 (10000) | 8 (5/16) |
| 3247 | 100 mm Black Magic Air Aluminium Block — Swivel, Becket | 100 (3 15/16) | 241 (9 1/2) | 675 (23.82) | 16 (5/8) | 3402 (7500) | 6804 (15000) | 10 (3/8) |
