Oxy-Fuel Cutting Tip. Only the original Koike oxy fuel cutting tips: 102, 102HC, 102-D7, 103, 103-D7, 106, 106HC, 106-D7, 107 and 107-D7 are designed and manufactured to provide high quality cutting, safe operation, longer cutting life, high speed cutting and save gas costs. In addition our 100 series cutting tip can be used to replace Airco ...