Threaded safety carabiner with double locking mechanism. Openable 17 mm. Before using the carabiner, make sure that it is not deformed or worn. Material: zinc-plated steel. 1 safety carabiner weighs: 170 g.Application: working at heights and on roofs.Standards: – EN 365: 2004 – Personal protective equipment against falls from a height. General requirements for instructions for use, maintenance, periodic examination, repair, marking and packaging – EN 362: 2004 – Personal fall protection equipment. ConnectorsCass B – EN 363: 2018 – Personal fall protection equipment. Personal fall protection systems – EN 364: 1992 – Personal fall protection equipment. Test methods