The Westbury Stair Crossover Adaptor allows you to have a continuous top rail on your stairs. If you have a long stair length but you want a continuous top rail, this will be the bracket useful for your needs. The Westbury Stair Crossover Adaptor can attach to a 2 x 2 stair post, replacing the end cover so the crossover bracket allows for a graspable handrail all the way down your staircase. This Westbury Stair Crossover Adaptor will swivel from 0 to 43 degrees.