SECULOK Double Acting Climbing Scaffolder Safety Snap Hook Automatic Lock Fall Arrest Protection (Meet ANSI Standard) CLASSIC DESIGN  Over 25 years customers guarantee; designed for the tough environment VARIOUS PURPOSES  Applied for Aloft Work, Steeple Jack, Rock Climbing, Ice Climbing, Hammocks - or being a REAL Spider man! QUALIFIED WITH ISO STANDARDS - ANSI Z359.12, CSA Z259.12-11. EN 362:2004. AUTOMATIC LOCK HOOK - To ensure your safety first during any extreme activities in the air! SECULOK SELECT  Exclusive design only from SECULOK