new and high qualityHigh Speed Steel Material madeSurface with Titanium CoatedRound shank is suitable for most electric drill machineDifferent size of drill can make different size holesApplying to drilling hole on the wood,thin plastic,Aluminum alloy etcSharp edge, you can drill wood and other thin plate, but also in the horizontal drilling after drilling.Material:high speed steelSurface material:TitaniumShank shape:roundDrill Size:3mm,4mm,5mm,6mm,6.5mm,8mmLength:10cmWeight:80gColor:silver+goldSpecifications:High Speed Steel MaterialSurface with Titanium CoatedSuitable for most electric drill machineDifferent size of drillRound shankDrill Power ToolsPackage Included:6 x DrillNotes:Due to the difference between different monitors, the pictures may not reflect the actual color of the item.Compare the detail sizes with yours, please allow 13cm error, due to manual measurement.Please leaving a message before you give the bad feedback, if the products have some problems.Thanks for your understandings.