Item Description:Material: High-speed steel 4241Color: in picThis set of combined tap and drill works great in drilling and tapping and it has 6 sizes in a set, which would meet yourdemands perfectly. Features:1/4" quick change hexagonal shank.High-speed steel with titanium coated, rust and good looking.The combined tap and drill performs well in drilling and tapping processing.Drilling and tapping 2 in 1, suitable for wood, plank, aluminium plate or sheet iron.It includes 6 sizes in one drill bit set(M3*0.5, M4*0.7, M5*0.8, M6*1, M8*1.25, M10*1.5). Specifications:Surface Treatment: Titanium platedHex Shank Diameter: 6.35mmQuantity: 6PcItem Specification:DIY Supplies: WoodworkingType: Twist Drill Bitlength: 6.35mmUse: Wood Drillingis_customized: YesMaterial: High Speed Steel