Circular Staircase Kit With Wood Railing - 1:48 Scale Laser Cut Kit - Total height of staircase is 2-3/4" H from base to top step. Railing height is 13/16" High. Width of each tread is 3/4" from railing to center pole. Height of Circular Staircase can be made shorter by eliminating steps. Each step is 3/16" from top of tread to bottom of next tread.