perfect for making countersunk countersunk holes and countersunk holes for plugs.<br> The countersinks are carbon steel, the surface is titanium coated, sturdy and durable, not easy to rust, long service life.<br> This kit is suitable for DIY at home and daily use, it allows to drill easily and effectively, without burr.<br> Universal size compatible with all types of drill, drilling machines, including vertical drilling machine, and another common milling cutter.<br> Used in hardness 25 under the part, such as carbon steel, sheet metal, insulation boards, PVC board, wood<br> For the 90 chamfer piece hole or conical hole, the chamfer edge edges and angles of the treatment<br> Can be completed finished the treatment of the cone for one time. Applicable to the small cutting process.<br> edges, , no broken edge, small resistance to chamfering, high precision in the hole, more durable<br> Flute with big chip, fast for the elimination of<br> Three blades of medium for laborious, each force of the blade smaller, high efficiency and more durable<br> Specifications:<br> Handle: round handle<br> Color: Gold + Silver<br> Material: High speed steel<br> Surface treatment: titanium coated<br> CUT:<br> Diameter of the head * Diameter of the * Length<br> 6.3MM: 6.3MM * 5MM * 37MM<br> 8.3MM: 8.3MM * 6MM * 40MM<br> 10.4mm: 10.4mm * 39MM * 6MM<br> 12.4mm: 12.4mm * 10MM * 46MM<br> 16.5mm: 16.5mm * 47mm * 10MM<br> 20.5mm: 20.5mm * 47mm * 10MM<br> Package Contents:<br> 8Pcs * Three Chamfering Drilling<br> Only the above package content, other are not included.<br> Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store