Uniweld 1-101A-3 Series Ameriflame Cutting Tip for Use with Oxygen and Acetylene 1-101A-000 Cuts up to 1/8-Inch steel using 20/25 PSI oxygen and 5 PSI acetylene, 1-101A-00 cuts up to 1/4-Inch steel using 20/24 PSI oxygen and 5 PSI acetylene 1-101A-0 cuts up to 1/2-Inch steel using 30/34 PSI oxygen and 5 PSI acetylene, 1-101A-1 cuts up to 3/4-Inch steel using 30/35 PSI oxygen and 5 PSI acetylene 1-101A-2 cuts up to 1 1/2-Inch steel using 40/45 PSI oxygen and 7 PSI acetylene, 1-101A-3 custs of to 2 1/2-Inch steel using 45/50 PSI oxygen and 10 PSI acetylene 1-101A-4 cuts up to 3-Inch steel using 40/50 PSI oxygen and 10 PSI acetylene