This universal drill bits set is suitable for use with your lithium electric drills, hand drills and benching drills. It is suitable for drilling holes in a variety of materials, such as wood, glass, ceramics, etc., and is a perfect helper for your daily work. If you need it, come and try it, it won't let you down.Features:It is made of alloy steel material, which has higher hardness than ordinary, and is more wear-resistant and has a longer service time.The resistance of the incision is smaller, the punching is more accurate and labor-saving, the removal of wood chips when drilling is more efficient, and the use feels perfect.Suitable for a lot of different materials, such as wood, plastics, foam brick, vitrified brick, glass and other materials, has a wide applications.This drill bits need to be used with electric drills, hand drills and benching drills which clamp ranges is within 10mm.A set of six different specifications, you can replace different drill bits according to different needs, no need to purchase separately, saving you time and money.Specifications:Material: alloy steelShank diameter: 6.35mm4mm:Working length: 43mmTotal length: 76mm5mm:Working length: 43mmTotal length: 76mm6mm:Working length: 45mmTotal length: 77mm8mm:Working length: 48mmTotal length: 80mm10mm:Working length: 55mmTotal length: 83mm12mm:Working length: 55mmTotal length: 86mmPackage size: 90 * 50 *12mm / 3.5 * 2.0 * 0.5inPackage weight: 125g / 4.4ouncePacking list:6 * Drill Bits