Component 1.Keel Frame: Carbon Steel,Side panel thickness 10 mm 2. Tread board support frame: Dia 32*3mmThickness round pipe 3. Baluster: Dia 38mm*1.2mm Thickness round pipe baluster, 304# stainless steel,Satin Finish 4. Tread board : 12mm+12mm laminated tempered glass 5. Handrail: Dia 50.8 Satin finish 304# stainless steel handrail+12mm solid bar 304# stainless steel What we delivery is more than metal parts, but also great Value of Architectural. pls contact for more: Website: http://www.hereditarystair.com Contcat person: Allan Chang 86-757-88532184 86-15919007557 Skype: Jessica18822 Optional Information - Payment : T/T L/C - Delivery : small order within a week - Origin : Guang Dong Foshan - Minimum Order : 5 - Packaging : 1. Pearl Cotton, Air Bubble Film and Plywood box for glass tread board. - Inspection : SGS - Samples : Charge - Sample Price : 1000 USD - Remarks : High Quality&Reasonal Price,Fit for office building , apartment flat, Shopping Mall, ect. Customization is available