The impression left by a spiral staircase is always one of wonder defined by tight curving lines, intricate craftsmanship and the feeling you are being led somewhere special. Superior strength achieved by the mortise and tenon tread supports guarantee this spiral stair will stand the test of time. Solid and durable building materials; this spiral staircase is built of solid oak with stainless steel spindles. Subtle walnut tread inlays offer another touch of craftsmanship. The natural finish showcases the beautifully matched wood grain on the curved railing.