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Square One 4″ Polycarbonate Hook Knife


The skydiving industry’s most popular and reliable hook knife.

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Our patented 4″ Hook Knife design has become the skydiving industry standard. Easily mounts under the ring cover or on the chest or leg strap of your harness/container system.

  • High-Strength Polycarbonate Handle
  • High-Quality Stainless Steel Blade

Available with or without lanyard and black parapack pocket. When ordering with a pocket, a lanyard is sewn to the knife handle and attaches to the pocket with a snap. If ordered without a pocket, please note the knife will not come with a lanyard attached.

Additional information

Weight 4 oz
Dimensions 3 × 2 × 1 in

Black, Red

Lanyard & Pocket

Yes, No


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