Description: Harken #3216 Black Magic Air Blocks 57mm with Becket and Shackle, SwivelBlack 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.Used on offshore boats, these strong, lightweight blocks feature aluminum cheeks, and free-rolling, high-load Torlon® roller bearings for a high strength-to weight ratio.Use them for sail controls that see lots of action — mainsheet, runner, halyard and spinnaker systems.Easy Maintenance —AirBlocks 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.Low Friction Caged Bearings —Roller bearings are housed in a unique center cage that keeps them separated and parallel for lower friction.Dirt and sand falls out between the rollers.Strong, lightweight sideplates and sheaves —6061-T6 aluminum sideplates are sculpted to remove excess weight.Thin-profile, deep groove aluminum sheaves have radiused edges to protect high-tech lines.Long-lasting protective finish —Sheaves and sideplates are deep-saturation Hard Lube-anodized for strength and durability• 30% lighter, 60% higher working load than equivalent sized ball bearing blocks• High- and low-load versions• Breaking load is 2 times safe working load• Dissimilar metals isolated to prevent corrosion - plastic isolators under all fastener heads and headposts• Three-way head - set screw locks shackle in front or side positions, or lets block swivel to keep line from twistingTypeSwivel, BecketSheave Diameter57 mmMax. Line ø7/16" or 12 mmMax. Working Load2500 lbBreaking Load5000 lbLength5-1/2"Weight5.86 ozHeight---Units have been Ultrasonically Cleaned and ready to Use. Retail New $292.00 eachShows typical signs of wear from use and weather.
Price: 135 USD
Location: North Attleboro, Massachusetts
End Time: 2025-01-19T21:04:54.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
Returns Accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Harken
Manufacturer Part Number: 3216
