Main Features
1)  Large opening and wide axial surface allow easy connection to rope and other slings.
2)  Munter hitch can be used to protect or descend;screw-lock system(SL)works stably and reliably in dusty,muddy or icy condition,suitable for infrequent door opening and closing.
3) Anti-snag system prevents it from catching clothing and fittings,reducing risks of faulty operation.