FALL SAFE® FS934 Fall arrest block is designed to be used as single person fall protection devices. Features a mobility enhancing  swivel-top,  a  rugged  and  durable  housing,  and  a  unique braking system that eases shock in the event of a fall. Swivel steel snap hook with fall arrest indicator, energy absorber integrated at swivel hook. Maximum load: 136 Kg (1 user only!) 4,225 Kg