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Gibbs Products
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Rescue Models

Gibbs Ascender Model #3

Gibbs Ascender Model #3SF

Gibbs Ascender Model #3S

  • 7/16" to 1/2" (11mm to 13mm) Rope
  • Spring Loaded or Free Running Forged Cam
  • 3/16" Aluminum Shell
  • Breaking Strength 5000 lbs 


The #3 Ascender is intended for litter raising and load hauling, where extra strength and light weight is required. Not for self belay by solo climbers.

Assembly: Depress button on pin and pull pin out until cam swings free. Place Ascender on rope and align holes in cam and shell. Depress button and insert pin.

Convert to Free Running Mode: Remove the small screw in the black spring cover. The spring will rotate freely. Do not remove the screw in the cam. Do not try to remove the spring.

Reconvert to Spring Loading: Hold cam down and re-insert screw in spring cover. 

Gibbs Ascender Model #3S

Gibbs Ascender Model #3SF

Gibbs Ascender Model #3S

  • 7/16" to 1/2" (11mm to 13mm) Rope
  • Spring Loaded or Free Running Forged Cam
  • Stainless Steel Shell
  • Breaking Strength 5400 lbs


The #3S Ascender is intended for litter raising and load hauling, where extra strength and durability is required. Not for self belay by solo climbers.

Assembly: Depress button on pin and pull pin out until cam swings free. Place Ascender on rope and align holes in cam and shell. Depress button and insert pin.

Convert to Free Running Mode: Remove the small screw in the black spring cover. The spring will rotate freely. Do not remove the screw in the cam. Do not try to remove the spring.

Reconvert to Spring Loading: Hold cam down and re-insert screw in spring cover. 

Gibbs Ascender Model #3SF

Gibbs Ascender Model #3SF

Gibbs Ascender Model #3SF

  • 7/16" to 1/2" (11mm to 13mm) Rope
  • Free Running Forged Cam
  • Stainless Steel Shell
  • Breaking Strength 5400 lbs 



The #3SF Ascender is intended for litter raising and load hauling, where extra strength and durability is required. Not for self belay by solo climbers.

Assembly: Depress button on pin and pull pin out until cam swings free. Place Ascender on rope and align holes in cam and shell. Depress button and insert pin. 

Gibbs Ascender Model #4

Gibbs Ascender Model #4S

Gibbs Ascender Model #3SF

  • 5/8" to 3/4" (14mm to 19mm) Rope
  • Spring Loaded Forged Cam
  • 3/16" Aluminum Shell
  • Breaking Strength 5650 lbs 


The #4 Ascender is intended for litter raising and load hauling, where extra strength and light weight is required. Not for self belay by solo climbers.

Assembly: Depress button on pin and pull pin out until cam swings free. Place Ascender on rope and align holes in cam and shell. Depress button and insert pin. 

Gibbs Ascender Model #4S

Gibbs Ascender Model #4S

Gibbs Ascender Model #4S

  • 5/8" to 3/4" (14mm to 19mm) Rope
  • Spring Loaded Cam
  • Stainless Steel Shell
  • Breaking Strength 5650 lbs 


The #4S Ascender is intended for litter raising and load hauling, where extra strength and durability is required. Not for self belay by solo climbers.

Assembly: Depress button on pin and pull pin out until cam swings free. Place Ascender on rope and align holes in cam and shell. Depress button and insert pin. 

About Gibbs Ascenders

  • Gibbs Ascenders are designed not to slip. 
  • They hold well on iced and muddy ropes. 
  • Their simple, durable construction makes them almost fool proof. 
  • They are easy to assemble on the rope yet will not come off unexpectedly. 
  • They can be rigged in all the standard methods for mechanical prussiks. 

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