Our NFPA and UL certified high tensile steel Ladder Hook with captive pin is designed to fit over ladder rungs, pipes, safety rails, building apparatus or anywhere you may need the huge gate clearance of these exceptional and strong ladder hooks. The gate clearance of our zinc plated ladder hook is enhanced by our unique self-locking twist lock gate mechanism, which enables the gate to open beyond the ladder hook spine, providing a massive gate opening, even for a ladder hook of this size!