#6 on this list
Basic
Petzl
The Petzl Basic is a compact, handle-free ascender built for climbers, cavers, and rope technicians who require a dependable mechanical rope grab without the bulk of a full-sized handle. It incorporates the same proven toothed-cam geometry found in Petzl’s premier handled ascenders, including an angled tooth pattern and a self-cleaning slot that pushes out mud, grit, and ice to maintain grip in challenging conditions. In field applications, the Basic serves multiple roles. It is frequently employed as a chest ascender in rope-walking systems, a foot-loop connector for alpine self-rescue, or a compact progress-capture device in lightweight hauling systems. Its low profile and minimal footprint make it easy to pack into an alpine kit, where every ounce counts but mechanical rope ascending may still be necessary. The obvious compromise is the absence of a molded handle. While the frame includes an upper and lower attachment hole, holding onto the bare metal body for thousands of feet of rope jugging is fatiguing on the hands and impractical in thick gloves. Climbers planning to jug full big wall pitches will be far better served by a handled ascender like the Black Diamond Index or Petzl Ascension, leaving the Basic for secondary attachment points and specialized setups. **Highlights** - Compact, low-profile frame saves weight and harness rack space - Toothed chrome-plated steel cam with self-cleaning slot for muddy lines - Large lower hole accommodates carabiners for lanyards and foot loops - Upper hole allows rope capture or harness tether attachment - Functions well as a chest ascender or lightweight hauler **Watch-outs** - Lack of a molded handle makes continuous jugging fatiguing - Harder to manipulate with thick, insulated winter gloves
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#7 on this list
Step Up LT
Black Diamond
The Black Diamond Step Up LT is an ultralight pocket aider engineered specifically for alpine climbers, free climbers tackling routes with brief aid cruxes, and emergency escape scenarios. Built with narrow, high-strength webbing, it sheds nearly all the bulk and weight associated with traditional big wall ladders, rolling down small enough to disappear into a pocket or clip onto the back of a harness without tangling with protective hardware. On the wall, the Step Up LT delivers when you encounter a blank section of rock, a blown pendulum, or a wet seam that prevents free climbing. It provides multiple steps for gaining height, letting climbers pull past difficult moves or tension-traverse with functional foot support. For fast-and-light pushes where carrying a full set of bulky aiders would hinder movement, its packability is unmatched. The clear limitation is a total lack of structural rigidity. The steps do not have stiffening stays, meaning the webbing collapses flat against the rock under tension. Getting a boot into the lower loops requires patience and often assistance from your other foot or hand, which can be exhausting on sustained aid pitches. It is an emergency and intermittent-use tool, not a daily driver for multi-pitch wall climbing. **Highlights** - Packs down into an extremely small footprint for pocket or harness storage - Ultralight design adds negligible weight to an alpine rack - Provides full multi-step elevation for passing difficult free cruxes - Durable narrow webbing construction maintains high tensile strength - Ideal backup tool for unexpected aid sections on long routes **Watch-outs** - Unreinforced steps collapse flat, making boot entry difficult - Uncomfortable for sustained, multi-pitch aid leads or hanging belays
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Specs side by side
| Spec | Basic | Step Up LT |
|---|---|---|
| Weight | 85 g (3.0 oz) | — |
| Rope Compatibility | 8 to 11 mm single ropes | — |
| Body Material | Aluminum | — |
| Cam Material | Chrome-plated steel | — |
| Certifications | CE EN 567, UIAA | — |
| MSRP | Around $90 | Around $70 |
| Gear Category | — | Ultralight pocket aider |
| Primary Material | — | High-strength narrow synthetic webbing |
| Step Reinforcement | — | Unstiffened, collapsing design |
| Packability | — | Folds into a palm-sized bundle |
| Primary Use Case | — | Occasional aid cruxes and emergency bailouts |
What our reviewers liked and didn't
Basic
- Weighs just 85 grams, minimizing harness clutter and pack weight.
- Chrome-plated steel toothed cam bites reliably on dirty or icy ropes.
- Wide lower attachment hole accepts multiple carabiners simultaneously.
- Versatile design functions seamlessly in hauling systems and ascents.
- Lacks a grip handle, making extended rope jugging tiring on bare hands.
- Compact safety catch is awkward to operate while wearing heavy winter gloves.
- Limited to single-rope setups between 8 and 11 millimeters in diameter.
Step Up LT
- Compresses down small enough to ride in an alpine jacket pocket
- Negligible weight makes it easy to justify on fast-and-light pushes
- High-tensile webbing provides dependable support through blank cruxes
- Integrates cleanly into emergency self-rescue and ascending kits
- Unstiffened steps collapse flat against rock, slowing boot entry
- Narrow webbing becomes uncomfortable during extended standing sessions
- Unsuitable for sustained, multi-pitch big wall aid climbing
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