Slings, Extenders and Daisy Chains for climbing are all made of Nylon (polyamide) or Dyneema®/Spectra® (polyethylene) webbing.
Dyneema® is much stronger than nylon and polyester but less elastic. According to DMM, even a 60cm fall-factor 1 fall on to an open Dyneema® sling can generate enough impact force (16.7 kN) at the anchor to pull a Wallnut 11 wire (12 kN) apart. In fact nylon/polyester slings can also snap wires and both substances lose significant strength with wear, whilst pulling an abseil rope through a sling of either material can generate sufficient heat to weaken it or melt it completely.
It follows from this that slings and extenders should be replaced regularly (say every three years with normal use, but sooner if they look badly worn), that if you use slings in a belay system, that system should have no slack in it whatsoever, and that slings should never ever be used as a cheap via feratta clipping system. All slings should be inspected regularly and replaced if they show signs of excessive wear or damage.
There is a good article on slings on the DMM Website.
Slings are measured by length, not circumference:
Gives the greatest reduction in peak loading of all Yates's screamers, 4-8kN.
A Screamer designed for "use on extremely marginal aid placements only"!
The Ice-Scream has a convenient tie-off mechanism for ice screws.
Replacement sling for the Dissip.
135cm long Daisy Chain made from 19mm Nylon tape.
Chain link daisychain designed for quick anchoring on sport routes and big wall use.
Safer than a standard daisy chain as each of the loops is 22kN as opposed to around 2kN.
Adjustable lanyard for belaying on sport climbs.
Single positioning lanyard with adjustable arm for sport climbers.
Double positioning lanyard with one fixed and one adjustable arm for sport climbers.
Completely adjustable double lanyard anchor system.
A positioning device has two adjustable arms so you always have the ideal length adjustment for aid climbing.
Adjustable sling that lets you make a fast length adjustment without using knots.
Holds the lower krab of quickdraw firmly. Fits tape up to 10mm.
Holds the lower krab of a quickdraw firmly. Fits tape from 15 - 20mm.
Holds the lower krab of a quickdraw firmly. Fits tape from 25mm - 30mm.
Secures a karabine at the end of a tape extender keeping it firmly in place.
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