Main Features
1)  (ZRD02) forged with AI-Mg alloy is suitable for single or double rope,with breaking strength of 35KN and diameter from 8-13mm,the small hole can be used as belay plate during ascending and transportation of accessory cord or other slings.
2)  Spur can be used to increase friction during descending belay or provide better descending control during two-man rescue,and it's made as brake stop of rope stopped overhead.