Features:Made from high quality material， can be used for a very long time.Easy to use to beautify your nails.30pcs nail drill bits fit for most professional electric drills.This set is for refining nails.Specifications:Material: Stainless SteelQuantity: 30pcs Drill Bits / SetBox Size: 15 * 6 * 2cm / 5.6 * 2.4 * 0.8inWeight: Approx. 90g / 3.14ozPackage List:1 * Box of 30pcs Nail Bits