... , Sepele, Elm, Cherry, Teak, etc. Shape: Arc, Straight, Spiral Stair SpecificationsElegant wooden stairs: Raw material: solid woodSize: as per customer request Wonderful ... : including Oak, Sepele, Elm, Cherry, Teak, etc.Shape: Arc Stair, Straight Stair, Spiral Stair 1. General specs: a. Stringer thickness: 50mm~60mm b ... : 0086-1392 332 8016 Skype: jamesho2008 QQ: 1519478103 Elegant solid wooden stairs