WL-308 WELLHOSE 939-3 2 ARM WOOD BURNING MACHINE appears to be the model number of an equipment used in woodworking applications. This type of machine is usually used in wood carving, patterning or decorating work. Having 2 arms gives users a more comfortable experience to fix the workpiece and process. Each arm can be adjusted with a different tip or temperature, which gives the user flexibility for various woodworking jobs.