![Harken 45mm Aluminum Black Magic Air Block w/Swivel [3391]](http://costamarinepr.com/cdn/shop/files/103512XL.jpg?v=1762275838&width=120)
Harken 45mm Aluminum Black Magic Air Block w/Swivel [3391]
![Harken 45mm Aluminum Black Magic Air Block w/Swivel [3391]](http://costamarinepr.com/cdn/shop/files/103512XL.jpg?v=1762275838&width=3840)
Harken 45mm Aluminum Black Magic Air Block w/Swivel [3391]
Product Details
45mm Aluminum Black Magic Air Block with Swivel
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. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from twisting. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Specifications:
- Sheave Ø (mm): 45 mm
- Sheave Ø (in): 1-3/4 in
- Length (mm): 100 mm
- Length (in): 3-15/16 in
- Weight (g): 79 g
- Weight (oz): 2.79 oz
- Shackle pin Ø (mm): 5 mm
- Shackle pin Ø (in): 3/16 in
- Maximum line Ø (mm): 10 mm
- Maximum line Ø (in): 3/8 in
- Maximum working load (kg): 750 kg
- Maximum working load (lb): 1653 lb
- Breaking load (kg): 1500 kg
- Breaking load (lb): 3306 lb
Care & Maintenance
To maintain the beauty and integrity of your purchase, we recommend treating it with care. Simple maintenance practices, such as gentle washing and proper storage, can effectively preserve the longevity of your favorites. We encourage you to refer to the care instructions included with each item, designed to help you keep your purchase in top condition.
Size & Fit
Our products are crafted to fit true to size, ensuring that you can confidently select your usual size with ease. Whether you’re looking for a relaxed or tailored fit, our designs are made to complement your unique shape and style.