uxcell 21mmx240mm High Speed Steel Taper Shank Twist Drill Bit Drilling Tool Product Name : Taper Shank Twist Drill Bit;Cutting Diameter : 21mm/0.83";Shank Max.Diameter : 18mm/ 0.7" Shank Length(include Tang) : 80mm/ 3";Tang Size : 13x 13x 6mm/ 0.51" x 0.51" x 0.24" (L*W*T);Neck Size : 11 x19mm/ 0.43" x 0.75" (L*D) Flute Length : 14cm/ 5.5";Total Length : 24cm/ 9" Color : Black;Material : HSS Total Weight : 333g;Package Content : 1 x Taper Shank Twist Drill Bit