Maxi Pro Acetylene Cutting Tip (Harris Style)  Fits P4-MP02L Acetylene 2 Piece Cutting Tip Size 0 - Cutting thickness 1-15mm Acetylene 2 Piece Cutting Tip Size 00 - Cutting thickness 5-10mm Acetylene 2 Piece Cutting Tip Size 000 - Cutting thickness 1-5mm Acetylene 2 Piece Cutting Tip Size 1 - Cutting thickness 15-25mm Acetylene 2 Piece Cutting Tip Size 2 - Cutting thickness 25-50mm Acetylene 2 Piece Cutting Tip Size 3 - Cutting thickness 50-100mm Acetylene 2 Piece Cutting Tip Size 4 - Cutting thickness 100-175mm Acetylene 2 Piece Cutting Tip Size 5 - Cutting thickness 175-250mm Acetylene 2 Piece Cutting Tip Size 6 - Cutting thickness 250-300mm