PROSTAIR WOOD Z is a step nosing profile in real oak with aluminium base. The rounded shape of the “knurled convex” torus with non-slip surface makes a perfect and elegant nosing for stairs and steps in ceramic-tile-terracotta-wood for indoor and outdoor environments. Attractive. PROSTAIR WOOD Z may be treated and painted subsequently at the time of laying, according to the finishes chosen for the staircase.