The Singing Rock Jack is a compact descender designed for work at height, rope access, and rescue applications
Built with a focus on durability, simplicity, and intuitive operation, the Jack provides controlled movement on the rope for positioning, ascending, descending, lowering, and belaying applications.
The device automatically locks the rope when the lever is released, allowing the user to focus on their task. Rope speed is controlled smoothly using the lever, while the straightforward design allows for intuitive rope insertion and operation.
With an unloaded rope, the locking mechanism can be deactivated by pressing the cam, allowing the rope to be removed from the device without operating the lever. This feature allows the Jack to be used for applications such as belaying a lead climber or moving quickly along a flat roof. The device also allows easy rope retrieval for short rope ascents.
The Singing Rock Jack does not need to be disconnected from the harness when inserting or removing the rope. It requires no additional friction up to a load of 200 kg and is compatible with a range of rope diameters from 9.3 to 12 mm, depending on the applicable standard.
Rope-contact components are made from stainless steel to help extend the service life of the device. A screw allows the Jack to be permanently locked to the rope to create a non-removable system, while the lever and locking mechanism can be disassembled for cleaning and maintenance.
The patented magnetic cam-holding design helps simplify rope insertion.
Features
- Compact descender for rope access and rescue operations
- Suitable for positioning, ascending, descending, lowering, and belaying
- Automatic rope locking when the lever is released
- Intuitive lever-controlled rope movement
- Rope can be removed without using the lever when unloaded
- Allows short rope ascents through easy rope retrieval
- Can be inserted and removed without disconnecting from the harness
- No additional friction required up to 200 kg load
- Compatible with 9.3–12 mm ropes (depending on standards)
- Stainless steel rope-contact components for increased durability
- Screw locking option for creating a non-removable system
- Disassemblable lever and lock for cleaning
- Patented magnetic cam-holding system for easier rope insertion
Specifications
- Weight: 410 g (14.5 oz)
- Material: stainless steel, light alloy, hardened plastic
- Strength: 15 kN
- Max. load: 200 kg (see instructions of use)
- EN 12841-C: max. load 200 kg, with static rope 10 – 12 mm
- EN 341-2A: max. load 150 kg(max. descent length 100 m), with 11 mm static rope Singing Rock STATIC 11, min. temperature: -30 °C
- EN 15151-1 type 6, with rope 9.3 – 11 mm

















