For use with 300FC Series Torch Handles. Multi-flame heating head for heat treating,straightening, & priming.FeaturesMulti Flame Heating heads for Acetylene, Hydrogen useIndustries Industrial and General Fabrication Repair and Maintenance Structural Steel Fabrication Light Fabrication Operating Specifications 2-MFA-J Box BTU per hour 4410 - 13230 4-MFA-J Box BTU per hour 8820 - 29400 6-MFA-J CS Clamshell BTU per hour 20580 - 58800 2-MFA-1 Box BTU per hour 4410 - 13230 4-MFA-CS BTU per hour 8820 - 29400 6-MFA-CS BTU per hour 20580 - 58800 8-MFA-CS BTU per hour 44100 - 117600 Tip Specifications Available Length 17.5 in. (444.5 mm) Available Size 12 Type MFA Available Length 17.5 in. (444.5 mm) Available Size 15 Type MFA Available Length 12.0 in. (304.8 mm) Available Size 4 Type MFA Available Length 12.0 in. (304.8 mm) Available Size 6 Type MFA Available Length 12.0 in. (304.8 mm) Available Size 8 Type MFA Available Length 12.0 in. (304.8 mm) Available Size 10 Type MFA Available Length 12.0 in. (304.8 mm) Available Size 2 Type MFA-1 Available Length 12.0 in. (304.8 mm) Available Size 4 Type MFA-1 Available Length 12.0 in. (304.8 mm) Available Size 6 Type MFA-1 Available Length 12.0 in. (304.8 mm) Available Size 8 Type MFA-1 Available Size 2 Type MFA-J Available Size 4 Type MFA-J Available Size 6 Type MFA-J