Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. Fly blocks are perfect for use on foiling dinghies and sportboats and for vang cascades and backstay systems on Grand-Prix racers.
18 mm blocks feature an integrated stainless steel inner race and rivet, stainless steel ball bearings, and composite fiber-reinforced sideplates.
A length of Spectra® line is included.
Spectra® is a registered trademark of Honeywell International, Inc.
- Sheave: 18 mm / 23/32 in
- Length: 28 mm / 1 3/32 in
- Weight: 7.2 g / .25 oz
- Maximum line: 5 mm / 3/16 in
- Maximum working load: 125 kg / 275 lb
- Breaking load: 450 kg / 992 lb
Shipping & Returns
Delivery Info: Enjoy Free Standard Shipping on most orders* to the Continental United States over $75. Our Standard Shipping method utilizes USPS, UPS, and FedEx to send packages near and far. Oversize/Freight shipping (where applicable), Expedited Shipping (where available), and rates to other destinations will be calculated at checkout.
See our Shipping Page for more information (and exceptions).
Returns Info: Your 100% satisfaction is our goal - we want you to love your sailing gear, but if something doesn't work out, we accept returns on most new, unused items*. Returns can be made within 366 days (1 year + 1 day) of your original order date. Exceptions include (and are not limited to) cut line, Rig Shop products, special order items, numbered sailors, and items used or worn sailing.
See our Returns Page for more information.