Petzl Ascentree Ascender
Best ergonomic double handle tool for professional arborists.
This double-handled clamp is the gold standard for arborists who need a reliable, high-traction ascent on double ropes. The ergonomic design makes long climbs feel effortless, even in bulky gloves, though the specialized, heavy-duty build means it’s overkill for anyone not working professionally in the canopy.
$274.95
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Who it's for
- Arborists performing frequent and demanding double-rope climbs
- Professional climbers seeking fluid movement and reduced fatigue
- Outdoor professionals working in unpredictable or harsh environmental conditions
Who should skip it
- Generalist climbers who prefer multi-purpose gear for various ascent styles
- Minimalist climbers prioritizing a lightweight and compact gear setup
- Users working with non-standard or very thick climbing lines
Performance breakdown
Ergonomic Handling
Molded grips provide exceptional comfort during long, repetitive ascent cycles.
Rope Compatibility
Handles a wide range of rope diameters with consistent, reliable bite.
Glove Usability
Spacious handle design allows for full dexterity even with thick gloves.
Debris Management
Self-cleaning cam slots maintain grip on dirty or icy ropes effectively.
Attachment Versatility
Multiple connection points simplify complex rigging for hauling and backup systems.
Weight Efficiency
Sturdy construction adds some mass but ensures long-term durability in trees.
Key Specs
Weight
331 grams
Minimum Rope Diameter
8 mm
Maximum Rope Diameter
13 mm
Device Type
Double-handled ascender
Intended Use
Tree Climbing
Number of Users
1
Hand Orientation
Both
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