2:Tread:30mm solid timber,25,52mm laminated tempered glass,30mm solid marble.

3:Tread support:6.0mm thick steel plate,A3 steel powder coated, sus304, sus316 satin/mirror finish.

4:Handrail:050.8mm solid wood. sus 304 or sus316 satin/mirror finish.

5:Stair Railing:12mm tempered or laminated glass railing with sus304/sus316 standoff.