Abstract: An adjustable hand rail wherein a plurality of support posts are arranged for positioning individually between spaced existing rail support members of an existing elongate rail member, wherein the support posts each include a telescoping leg having a resilient pad for frictionally engaging a staircase between the existing rail support posts. The support posts each include a row of slots, with a secondary rail member provided with a plurality of mounting plates, and each mounting plate includes a plurality of projections, wherein the projections of each mounting plate are arranged for reception within a pair of the receiving slots of an individual support post to adjustably position a secondary rail member secured to the mounting plates.