Oxy - Fuel. Only the original Koike Oxy-Fuel Cutting Tip 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 style cutting ...