Simplify your staircase installation with these Chidaca angled stair treads. The treads are made of natural birch for a durable design that adds style to your stairs. They are reversible and pre-finished for easy installation without the need for extra work. Ideal for use with a spiral staircase that turns to the left or the right, the set of three stair treads includes a "diamond" tread and two "triangular" treads. Use these stair treads with any interior staircase project or with Chidaca stair risers for a coordinated design.