One-third of the force can be carved by hand, 3-5 times speed for carving, no fatigue.Each with five special beveled bits with a small wrench.Cannot be used individually, must be used with electric tools, such as grinding machine,Small grinding machine, electric drill flexible rod. And the rotation speed should be less than 12000.In addition to general wood, but also can be carved ebony and soft plastic. Product Description Features: One-third of the force can be carved by hand, speed 3-5 times to carve, without fatigue. Each with five special chisel tips with a small wrench. Cannot be used alone, must be used with power tools, such as overhead grinding machine , Small grinding machine, flexible electric drill And the rotational speed should be less than 12000. In addition to wood, but also can be carved ebony and soft plastic . Strong shell, excellent thermal efficiency, very safe. Stem materials: plastic + metal. Length: 150mm. Includes: 1 set of wood chisels. Note: The data is all manual measurement, please allow an error of 1 -3cm; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.