modular wood steel stairs Spec.: Stringer: 8mm thickness of steel Tread: 38mm thickness solid wood Closed board:20mm thickness solid wood Feature: Simple - steel stringerFashional and ElegantEconomical - no material wasteEasy Installation - simple components, connected by standard steel fittings, without welding needed on site.Trade terms: Delivery time:20 days after payment Payment term:L/C,T/T,Westion Union,MoneyGram MOQ:1 set Package:wooden box with polyfoam & carton inner protected We have done staircase foreight years! Just send us yourstairs drawing (note stairs height,stairs length and stairs width)to see how it will fit and look in your home.