C-8070 Blank Tread S4S 1-1/32"SKU: C-8070-BLANKSizes Available in Red OakSelectSizes Available in White OakSelectNosed 2 Sides 1-1/32" options:SelectInformation:CAD Drawing (coming soon) Tread thickness: 1-1/32" Our Blank Treads are square on each side Also available nosed on 2 sides, see options above for availability.