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Product Summary

The DoubleLock Hammerhead is a bold, battle-ready chain and stick lock designed for rugged marine, industrial, and trailer security. Featuring a heavy-duty chain mated to a red “hammer” deterrent stick, this lock can secure multiple items together with unmatched flexibility. With a total reach of 210 cm (6.8ft.) and weighing over 13 lbs, the Hammerhead is a no-compromise solution when it comes to keeping gear locked down. It’s built to resist cutting, grinding, and brute-force attacks while offering convenient deployment and portability. If you haul high-value equipment or store items in exposed environments, the Hammerhead is your go-to heavy chain solution.

What's Included

    (1) Chain, Lock and Keys

Features + Benefits

  • 6.8 ft total length secures multiple items. Bright red hammer stick deters theft visually. Chain + shackle combo delivers dynamic security. Ideal for marine, utility trailer, jobsite, or industrial use.
  • Ideal for securing trailers, boat cleats, golf carts, gates, and industrial equipment.
  • 4 Ultra

Key Specs

AttributeSpecification

item#

6709951

Brand

DoubleLock USA

Manufacturer's Warranty

2 year limited warranty

Ship Weight

13.9 LB

Shackle Inner Height

0 in

Included (qty.)

1

Cable Length

78.7 in

Material

Steel

Weatherproof

Yes
AttributeSpecification

Keys Included (qty.)

5

Shackle Inner Width

0 in

Shackle Diameter

0 in

Cable Diameter

0 in

Resettable Combination

No

Keyed Alike Multipack

No

Product Weight

13.7000 lb

Dimensions L x W x H (in.)

3.3 x 13.2 x 10.4 in

Warranty

Manufacturer's Warranty

2 year limited warranty