Condition: 100% Brand New_x000D_Item Type: Center Drill _x000D_Material: High Speed Steel _x000D_Color: Orange _x000D_Usage: Widely used in glass, ceramic tile, plastic, wood and other materials drillingTypeTotal LengthWorking LengthBlade DiameterHandle DiameterTotal Weight_x000D_3mm83mm / 3.3in45mm / 1.8in3mm / 0.1in3mm / 0.1in3.5g / 0.1oz_x000D_4mm83mm / 3.3in45mm / 1.8in4mm / 0.16in3mm / 0.2in5.5g / 0.2oz_x000D_5mm81mm / 3.2in49mm / 1.9in5mm / 0.2in3mm / 0.3in6.6 g / 0.23 oz_x000D_6mm101mm / 4in55mm / 2.2in6mm / 0.24in5mm / 0.2in12.5g / 0.4oz_x000D_8mm118mm / 4.6in71mm / 2.8in8mm / 0.3in8mm / 0.3in29.8g / 1.1oz_x000D_10mm120mm / 4.7in70mm / 2.8in10mm / 0.4in7mm / 0.28in36.6g / 1.3oz_x000D_12mm122mm / 4.8in72mm / 2.8in12mm / 0.5in9mm / 0.35in58.2g / 2.1oz 1The drill shank cuts the three?dimensional triangular, so that the electric drill clamping is more tight and the drilling does not slip. 2High quality high speed steel material, strong toughness, wear resistance. 3U?shaped spiral grooves, conducive to drilling more smoothly, convenient to use. 4Widely used in glass, ceramic tile, plastic, wood and other materials drilling. 5Including 5pcs drill bit of the package, meeting your different needs.1 x 3mm Drill Bit 1 x 4mm Drill Bit1 x 5mm Drill Bit 1 x 6mm Drill Bit1 x 8mm Drill Bit1 x 10mm Drill Bit1 x 12mm Drill Bit