1" Tread (with cove moulding and paint grade stringer/riser) in your choice of Red Oak, White Oak(flat or quarter sawn), Maple.
Oak stringer/riser no moulding
Solid 1 3/4"Tread Open Rise Stair with closed stringers.
1" Tread, 1 3/4" Profile
Your risers and/or stringers are closed but this gives a substantial look when Stringers and Risers are painted.