Revolutionary SRT Friction Tool for the Tree Climbing Arborists
The ISC RP280 Rope Wrench ZK-2 is a game-changing device for arborists working on a stationary rope system (SRS) formerly stationary rope technique (SRT). By creating a controlled bend in the rope, the Rope Wrench generates friction that takes load off your climbing hitch, allowing it to function like a traditional climbing system — but with the speed, efficiency, and versatility of SRT.
Whether you're ascending rapidly or wanting to redirect through natural branch unions more efficiently, the Rope Wrench ZK-2 delivers capabilities that simply aren't possible with conventional moving rope systems or MRS (formerly doubled rope technique DDRT) setups.
Key Features
- Enables SRS work positioning — climb and work on a stationary rope system (non-moving) leg of rope
- Creates rope friction via a controlled bend — offloads your hitch so it operates like a traditional system
- Rapid ascent and descent — significantly faster than traditional MRS climbing
- Redirect through any natural branch union — without the added friction of a traditional system
- Entire system lowerable from the ground — critical safety advantage in emergency situations
- Manufactured by ISC from aluminum — lightweight and durable
Specifications
- Brand: ISC
- Model: RP280 ZK-2
- Material: Aluminum
- Application: tree climbing, arboriculture, work positioning on stationary rope system
Quick Decision Guide
- Ready to move to SRT climbing? The Rope Wrench ZK-2 is the simplest and most effective way to get started.
- Want a complete Apex Rope Wrench kit? Check out the new ISC Apex Rope Wrench here!
- Need a foot ascender for your SRT system? See the CT Quick Step Foot Ascender or Petzl Pantin.
- Need a handled ascender? See the CT Twin Ascender or Petzl Ascension.
Frequently Asked Questions
What is SRS/SRT climbing?
SRS (stationary rope system) involves climbing on one static leg of rope anchored at the base or crown of the tree. Unlike MRS (moving rope system), the rope does not move through the anchor — the climber ascends and descends on a fixed line, which allows for faster movement and more efficient redirects.
How does the Rope Wrench create friction?
By bending the rope through the pulley and around the SLIC pin, the Rope Wrench creates the necessary friction needed to reduce the load on your hitch. This allows the hitch to release and reset smoothly, mimicking the feel of a traditional climbing system on a stationary rope.
Can an SRS system be lowered from the ground?
Indeed, one of the primary advantages of a stationary rope system is the capability to configure a lower able rescue-ready base anchor. To enhance emergency preparedness, a secondary SRS system equipped with a Rope Wrench can be attached to the base anchor and utilized to lower an injured climber.