The Guardian, Fall Protection Safe-T Ladder Extension System, Attach To The Top Of A Ladder To Provide Safe & Easy Transition From The Ladder To A Raised Surface, No Tools, Drilling, Or Bolting To Install, Provides 2 Offsetting Handrails For Point Of Walkthrough To Step On Or Off The Ladder, Patented Equipment Assists Workers In Complying With OSHA Standard 1926.1053B Which States When Portable Ladders Are Used For Access To An Upper Landing Surface, Ladder Side Rails Shall Extend At Least 3'.9 M Above The Upper Landing Surface Which The Ladder Is Used To Gain Access, Simple To Use, Tightens Onto A Ladder By Hand, Will Never Scratch Or Damage The Ladder To Which It Is Attached, Safety Latch That Prevents It From Slipping Off The Ladder.