Concoa 811-8000 Style 80 Size 0 Welding Tip For use with Acetylene, Oxygen Complete tip and mixer for general welding Fits Airco 800 Series torch (Concoa PN 819-0800) This size not for use with Mapp Gas Made from style 98 weld tip, 811-0890 mixer and tip nut assy819-0800 welding handle Old Airco part number 0811-8000. Old Concoa part number 1811-8000