Extending a tricky cam placement or reducing rope drag on a meandering route,
sometimes only a long runner will do! A good rack has a wide selection of runners
to cater for all types of placement.
Slings are also invaluable to a good rack,
they can be used for the longest of runners, a bombproof thread, a cheeky spike
or perfecting a comfortable belay stance.When choosing your slings or runners
the length quoted is the end to end distance. (Not circumferance)
These
are Dyneema slings.
Slings are made from dyneema or nylon. Dyneema is lighter
then nylon but not so hard wearing. Dyneema slings are thinner so make for more
flexible threads, the greatest danger to dyneema is a hot belay device.