- Reliable dual braking system: ratchet-locked double swivels included on all cable models minimize twisting of the rescue line during use. The fall-arrest kit can rapidly decelerate and arrest falls within a limited distance (≤ 0.2 m / 8 in), reducing injuries from acceleration and impact forces. - Self-locking hook: the self-locking hook securely attaches the lifeline device to the anchorage point. - Aviation-grade braided wire rope: twist-resistant steel rope with multiple strands for higher tensile strength. Load capacity: 150 kg / 330 lbs with 3 mm diameter; 300 kg / 661 lbs with 5 mm diameter. - Long-term durability: inner aluminum alloy shell and outer plastic shell provide dual protection for internal parts. The nylon rope is wear- and heat-resistant. The D-type plug made of alloy steel ensures a secure connection to the outer shell. The impact-resistant black rubber pad and spring provide double cushioning to protect the rope and minimize damage to the outer shell. - Applications and scenarios: ideal for working at height on scaffolds, rooftops, or towers; suitable for industrial maintenance and inspections of overhead systems, bridges, or cranes; useful for rope-access tasks or rescue scenarios requiring controlled deceleration and secure anchorage.