This is a Victor 1-101 Acetylene Cutting Tip / Nozzle for oxy-acetylene cutting torches.
What it’s used for:
Cutting through carbon steel / mild steel plate using an oxy-fuel flame. The tip mixes acetylene + oxygen to make a preheat flame, then blasts pure oxygen to burn through the metal.
Key details from your pic:
1. Brand/Model: VICTOR 1-101 - Victor is a major U.S. welding brand. The 1-101 series is their standard “101” cutting tip for the 100FC/315FC type torches.
2. Gas: ACETYLENE printed on the case. You must use acetylene, not propane/LP. The orifice design is specific to acetylene pressures/flame.
3. Part No: 0330-0005 on the red sticker. Made in USA w/ imported Material.