ce certificated 100% tested 2 years warranty Gases: O2, VAC, AIR, N2O,CO2, N2,EVACCopper tube diameter: 8mm, 10mm, 12.7mm100% tested before shipmentWarranty time: 2 yearsCode NO. table of console as below: GASES CODE NOOXYGENBM-GDC-OVACUUMBM-GDC-VMEDICAL AIRBM-GDC-AN2OBM-GDC-NCO2BM-GDC-CN2BM-GDC-N2EVACBM-GDC-EFor detail photo DISS Medical Gas Outlet