The Kong Italy Back-up ANSI Twist lock is an ideal fall arrester for work at height protection systems. Designed for use with a 10.5mm or 11mm EN1891 type A line, it features a toothless mechanism to minimize damage to the rope. With a selector lever for two modes of use and the option to use without a lanyard or energy absorber, this versatile device can also function as an ascender or rope clamp for rescue systems.