SPECIFICATIONS340W - 3 Adjustable Speed. It can be used for drilling iron (diameter ≤0.24in), wood (diameter ≤0.63in), plastic board, aluminum board, composite board, resin board, thin metal, circuit board, and other non-rigid materials. It can also be used for teaching experiments, DIY crafts, or furniture, such as Buddhist beads, shells, crystals, toy models, and so on.