SRS Climbing Devices
SRS climbing devices, often called a mechanical prusik when they replace a friction hitch, control your descent and positioning on a single stationary line. They let a climber ascend efficiently and work the canopy on one rope anchored at the base or high in the tree.
Notch Equipment
Notch Flow Adjustable Rope Wrench
An adjustable rope wrench for SRS climbers who want to dial friction to the rope.
Notch
Notch Fusion Rope Wrench Tether
Replacement tether that links a Rope Wrench to your friction hitch on SRS.
Petzl
Petzl Chicane Auxiliary Brake
An auxiliary brake that turns a Zigzag into an SRS device.
ISC
ISC Chipmunk Flex Tether
A replacement flexible tether for the ISC Chipmunk in SRS setups.
Vertec
Rope Runner (Vertec)
A mechanical friction device for stationary rope tree climbing.
Petzl
Replacement Friction Pins for Chicane
Fresh friction pins to keep a Chicane braking smoothly on a stationary rope.
ISC
ISC Apex Rope Wrench
A rope wrench for SRS climbers who want a hitch that tends and descends smoothly.
Singing Tree
Singing Tree Rope Wrench Slick Pin
A replacement slick pin for the Singing Tree Rope Wrench.
Rock Exotica
Rock Exotica Akimbo 2
A mechanical friction device for SRS and MRS climbing with smooth, adjustable control.
Nothing matches those filters. Try another brand or raise the price limit.
Buying guide
How SRS devices fit into a system
On a stationary rope the line does not move through the anchor; you move along it. That means your device does all the friction work, and it needs to give smooth control without excessive heat. Some setups use a friction hitch tended by a device, others use a fully mechanical unit. Ascent is handled with chest and foot ascenders or a rope-walking setup.
A good SRS kit also includes a base anchor or retrievable canopy anchor, quality connectors and a rope within the device's rated range. See moving-rope options on our MRS climbing devices page.
Stationary rope work also changes how you think about anchors. The anchor carries the full load on a single line, and a canopy anchor sees forces differently than a moving rope redirect. Choosing the anchor point and tie-off method is as important as choosing the device.
Choosing and using one
Look at rope compatibility, how the device handles a long descent, how easy it is to lock off for work positioning and how it behaves with gloves on. Learn SRS from a qualified trainer; anchoring and rescue are different from moving rope work.
Anything you hang your life on must meet the applicable standard, be used per the manufacturer's instructions and ANSI Z133, and be inspected before every climb by a trained user.
Many climbers keep both MRS and SRS gear in the truck and pick the system that suits each tree. Learning both makes you more flexible, and it gives you options for rescue.
Common questions
What is a mechanical prusik?
It is a mechanical device that does the job of a friction hitch, grabbing the rope under load and releasing for descent or advancing.
Do I need different rope for SRS?
Many arborist climbing lines work for SRS, but each device has an approved diameter and construction range. Match your rope to the device.






