When used as a handrail the GlowGuide system is designed to dramatically enhance the safety of your RV step entry/exit system. The GlowGuide system is comprised of three telescopic arms: the upper door mount arm, the lower step mount arm and the strut arm. All three arms are telescopic and have the same length adjustability. Torklift also manufacturers a lock system to secure the handrail to the outside of the RV while in use to prevent theft and is sold separately. The GlowGuide Lock is critical in securing the safety of your investment and is keyed alike so your lock can be matched to your GlowGuide and GlowStep, Stow N’ Go or GlowStep Revolution. This removable stair railing lock has replaceable weather caps over the key holes to prevent weather damage and road grime. Made of steel with automotive quality plating, the GlowGuide Lock is made in the USA.