Main Features
1)  The heat caused by long distance descender rope friction dissipates quickly to prevent damage to rope due to high temperature.
2)  Installation of one-way rope prevents the rope from twist or wrap;number of bars engaged on the rope may be adjusted according to requirement so as to adjust firction and descending speed.
3) (ZRD10) is designed with brake stop to realize short or long time braking on rope; suitable for single or double rope with diameter from 9-13MM.