MOS Reference: ANSI Z359.14 Class B self-retracting lifeline (SRL) with galvanized steel cable that extends and retracts automatically to maintain constant tension, eliminating slack and minimizing free-fall distance to under 24 inches. Internal centrifugal braking mechanism activates instantly when fall velocity is detected, arresting the fall within inches. Impact indicator visually shows if the unit has been subjected to a fall and must be removed from service. Swivel top connector prevents cable twist during use. Compact and lightweight housing allows easy transport and attachment to overhead anchor points. Rated for users up to 310 lbs (140 kg).