Retractable Fall Arrester Blocks can be anchored to a single point and allows the user to move uninhibited at different levels. These Fall Arrester Blocks are available in both robust and polymer casing and in aluminum casing. These Retractable Fall Arrester Blocks adopt centrifugal braking mechanism to function properly. Retractable Fall Arrester Blocks are fitted with swivel snap hook with load indicator PN 162 which indicates a warning line when a fall has occurred.