Description:Hand rotary drill hole, saves time and effort, precise, accurate and efficient.The force of the center punch can be adjusted through the cap, no need to use hammers.Detachable chuck, 360 degree rotatable, used for various purposes.Suitable for amber, beeswax, wood, plastic, walnut, rubber, and other drilling. Steel, iron, stone, hard things do not fit.Easy to make a dangle on your nail decoration Suitable for professional use or home use.Specification:Material: AlloyDrill Bits(5 Sizes): 1.0, 1.5, 2.0, 2.5, 3.0(each size 2 pieces)Drill Head Diameter: Approx. 9 mm / 0.35 inchDrilling Chuck( L x W): Approx. 88 x 14 mm / 3.46 x 0.55 inchPackage Includes:1 Piece Hand Drill Chunck and 10 Pieces Drill BitsNote:Due to manual measurement, there may be 1-2mm error in size.Due to the difference between different monitors, the picture may not reflect the actual color of the item.'