It is Wood Tools/Hand Tools/DIY Tools/Spiral Hand Push Drill/Hand Tools. Material: PVC Rubber, Chuck Diameter: 0.6”/ 1.5CM, Application: Mainly used for Wood, Resin, Jewelry, Walnut, Amber, Beeswax, Olive Nut, Vajra Bodhi, Beads, Ivory Nut, PVC, Acrylic and Plastic etc.