Abstract: Apparatus to equip an existing stair case with no hand railing with hand railings with the purpose of aiding a person with reduced capacity to climb up and down stairs. The apparatus includes features that permit the system to adjust to a large inventory of existing stair cases and to be installed without making any damage to existing installation. The apparatus is comprised of oversteps, railings, fixed height railing supports, adjustable height railing supports, attachments to prevent tripping, a half step and hardware to attach all the pieces together such as bolts, nuts, butterfly nuts, washers and screws. No need for repairs to existing installation once the adjustable stair system with railings is removed. The apparatus is movable, re-usable and may be installed indoors and outdoors.