Features [5 pieces in 1 set] Includes 5 pieces. Cutting tips, sufficient quantity, for use on industrial gas media such as propane and gas. Brass and copper: use brass and copper material, a galvanic treatment to prevent oxidation, and has good thermal conductivity. CNC machining: with CNC machining, standard size and burr-free in the hole, with good cutting performance. High efficiency: the design accelerates the gas rate and significantly improves the preheating and cutting speed. Wide application: widely used in automobiles, locomotives, chemical machinery, general machinery, mechanical engineering, etc. Function: 1. 5 pieces in 1 set: Includes 5 cutting tips in sufficient quantity, which are used for industrial gas media such as propane and gas. 2. Brass and copper: use brass and copper material, electroplating treatment to prevent oxidation, good thermal conductivity. 3. CNC machining: with CNC machining, standard size and burr-free in the hole, with good cutting performance. 4. High efficiency: the design accelerates the gas rate and significantly improves the preheating and cutting speed. 5. Wide application: widely used in automobiles, locomotives, chemical machinery, general machinery, engineering machinery, etc. Specification: Item Type:Cutting Tips Material: brass, copper. Application Widely used in various industries such as automobiles, locomotives, chemical machinery, general machinery, engineering, steel structures, etc. Applicable medium: industrial gas such as propane and coal gas Model G03-4# G03-5# G03-6# Nozzle opening 1.3 mm 1.6 mm 1.8 mm cutting thickness 20-40 mm / 0.8-1.6 inches 40-70 mm / 1.6-2.8 inches 50-90 mm / 2 -3. 5 inch cutting speed 380-350mm/min 240-300mm/min 200-260mm/min Package list: 5 x cutting tips, 5 x storage boxes Note: This product is suitable for acetylene gas, please confirm whether it matches it before use. Package List 5 x Cutting Tips 5 x Storage Boxes